Journal of Yeungnam Medical Science

Original article

Neurology
Characteristics of mDIXON-Quant and proton magnetic resonance spectroscopy imaging of thigh skeletal muscles in patients with stroke-related sarcopenia: a prospective case-control study: Ruihong Yao, Bu-Lang Gao, Jihong Hu, Wei Zhao, Yang Tian, Liqing Yao, Yongneng Jiang; J Yeungnam Med Sci. 2025;42:49. Published online August 28, 2025; DOI: https://doi.org/10.12701/jyms.2025.42.49

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Abstract PDF: Background
This study was performed to investigate the imaging features of mDIXON-Quant sequence (Philips Healthcare) and proton magnetic resonance spectroscopy (1H-MRS) of thigh muscles in patients with stroke-related sarcopenia (SRS).
Methods
This prospective case-control study was conducted in 40 patients with SRS, 40 patients without sarcopenia who had a stroke, and 40 healthy volunteers using mDIXON-Quant and 1H-MRS scanning. Skeletal muscle cross-sectional area (CSA) and fat fraction (FF) were analyzed.
Results
The skeletal muscle FF value was significantly higher (p<0.05) in patients with SRS and on the affected side. The extracellular fat content of the rectus femoris muscle in normal controls was 4× to 10× the intracellular fat content. A significant increase (p<0.05) in intra- and extracellular fat content was detected in the SRS group. The degree of fat content increase in the SRS group was significantly lower (p<0.05) for extracellular fat than intracellular fat, with a ratio of extracellular to intracellular fat content of <4. The intracellular fat content was significantly higher (p<0.05) in the SRS group. A moderate-to-strong positive correlation existed between intracellular fat content (area 1) and muscle fat percentage. The degree of decrease in CSA in the posterior muscle group was significantly greater (p<0.05).
Conclusion
Thigh muscle CSA significantly decreased in SRS, while FF increased. The intra- and extracellular fat content of the skeletal muscle was significantly increased, especially the intracellular fat content. SRS was confirmed when the ratio of extracellular fat content to intracellular fat content was <4.

Review article

Radiology, Radiotherapy & Diagnostic Imaging
Digital auscultation in clear and present threat of novel respiratory infectious disease: a narrative review: Heeeon Lee, Gun Kim, Jacob Sangwoon Bae; J Yeungnam Med Sci. 2025;42:19. Published online December 30, 2024; DOI: https://doi.org/10.12701/jyms.2025.42.19

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The coronavirus disease 2019 pandemic has underscored the limitations of traditional diagnostic methods, particularly in ensuring the safety of healthcare workers and patients during infectious outbreaks. Smartphone-based digital stethoscopes enhanced with artificial intelligence (AI) have emerged as potential tools for addressing these challenges by enabling remote, efficient, and accessible auscultation. Despite advancements, most existing systems depend on additional hardware and external processing, increasing costs and complicating deployment. This review examines the feasibility and limitations of smartphone-based digital stethoscopes powered by AI, focusing on their ability to perform real-time analyses of audible and inaudible sound frequencies. We also explore the regulatory barriers, data storage challenges, and diagnostic accuracy issues that must be addressed to facilitate broader adoption. The implementation of these devices in veterinary medicine is discussed as a practical step toward refining their applications. With targeted improvements and careful consideration of existing limitations, smartphone-based AI stethoscopes could enhance diagnostic capabilities in human and animal healthcare settings.

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Artificial Intelligence for Tuberculosis Screening and Detection: From Evidence to Policy and Implementation
Hien Thi Thu Nguyen, Vang Le-Quy, Anh Tuan Dinh-Xuan, Linh Nhat Nguyen
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LMS-ViT: a multi-scale vision transformer approach for real-time smartphone-based skin cancer detection
A. Anny Leema, P. Balakrishnan, G. Gopichand, G. Rajarajan
Frontiers in Artificial Intelligence.2025;[Epub] CrossRef

Original article

Surgery
Diagnostic performance of F-18 FDG PET or PET/CT for detection of recurrent gastric cancer: a systematic review and meta-analysis: Chang In Choi, Jae Kyun Park, Tae Yong Jeon, Dae-Hwan Kim; J Yeungnam Med Sci. 2023;40(Suppl):S37-S46. Published online August 17, 2023; DOI: https://doi.org/10.12701/jyms.2023.00220

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Abstract PDF

Background
This systematic review and meta-analysis investigated the diagnostic performance of F-18 fluorodeoxyglucose (FDG) positron emission tomography (PET) or PET/computed tomography (PET/CT) for the detection of disease recurrence after curative resection of gastric cancer.
Methods
The PubMed and Embase databases, from the earliest available date of indexing through November 30, 2019, were searched for studies evaluating the diagnostic performance of F-18 FDG PET or PET/CT to detect recurrent disease after gastric cancer surgery.
Results
Across 17 studies (1,732 patients), the pooled sensitivity for F-18 FDG PET or PET/CT was 0.82 (95% confidence interval [CI], 0.74–0.88) with heterogeneity of I2=76.5 (p<0.001), and the specificity was 0.86 (95% CI, 0.78–0.91) with heterogeneity of I2=94.2 (p<0.001). Likelihood ratio (LR) tests gave an overall positive LR of 6.0 (95% CI, 3.6–9.7) and negative LR of 0.2 (95% CI, 0.14–0.31). The pooled diagnostic odds ratio was 29 (95% CI, 13–63). The summary receiver operating characteristic curve indicates that the area under the curve was 0.91 (95% CI, 0.88–0.93).
Conclusion
The current meta-analysis showed good sensitivity and specificity of F-18 FDG PET or PET/CT for detecting recurrent disease after curative resection of gastric cancer despite heterogeneity in ethnicity, recurrence rate, histology, and interpretation method.

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Personalized PET Imaging in Gastric Cancer: An Umbrella Review of Meta‐Analyses to Guide Radiopharmaceutical Selection and Clinical Indication
Aiganym Amrenova, Alma Shukirbekova, Sholpan Akhelova, Jamilya Assilbayeva, Andrey Gurin, Maira Ualieva, Bibigul Kaliyaskarova, Asset Sarsekeyev, Nadiar M. Mussin, Amin Tamadon, Swarbhanu Sarkar
International Journal of Biomedical Imaging.2026;[Epub] CrossRef
Follow-Up and Strategies After Curative Surgical Resection for Gastric Cancer
Seokin Kang
The Korean Journal of Helicobacter and Upper Gastrointestinal Research.2025; 25(4): 336. CrossRef

Review article

Radiology, Radiotherapy & Diagnostic Imaging
Hepatic encephalopathy on magnetic resonance imaging and its uncertain differential diagnoses: a narrative review: Chun Geun Lim, Myong Hun Hahm, Hui Joong Lee; J Yeungnam Med Sci. 2023;40(2):136-145. Published online January 10, 2023; DOI: https://doi.org/10.12701/jyms.2022.00689

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Abstract PDF

Hepatic encephalopathy (HE) is a severe neuropsychiatric abnormality in patients with either acute or chronic liver failure. Typical brain magnetic resonance imaging findings of HE are bilateral basal ganglia high signal intensities due to manganese deposition in chronic liver disease and hyperintensity in T2, fluid-attenuated inversion recovery, or diffusion-weighted imaging (DWI) with hemispheric white matter changes including the corticospinal tract. Low values on apparent diffusion coefficient mapping of the affected area on DWI, indicating cytotoxic edema, can be observed in acute HE. However, neuropsychological impairment in HE ranges from mild deficits in psychomotor abilities affecting quality of life to stupor or coma with higher grades of hepatic dysfunction. In particular, the long-lasting compensatory mechanisms for the altered metabolism in chronic liver disease make HE imaging results variable. Therefore, the clinical relevance of imaging findings is uncertain and differentiating HE from other metabolic diseases can be difficult. The recent introduction of concepts such as “acute-on-chronic liver failure (ACLF),” a new clinical entity, has led to a change in the clinical view of HE. Accordingly, there is a need to establish a corresponding concept in the field of neuroimaging diagnosis. Herein, we review HE from a historical and etiological perspective to increase understanding of brain imaging and help establish an imaging approach for advanced new concepts such as ACLF. The purpose of this manuscript is to provide an understanding of HE by reviewing neuroimaging findings based on pathological and clinical concepts of HE, thereby assisting in neuroimaging interpretation.

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Correlation Between Brain MRI Findings and Serum Ammonia Levels in Hepatic Encephalopathy
Muhammad Fahad Atta, Maria Irum, Sumaira Aslam, Naima Mujahid, Khawar Anwar, Shabzain Ishrat
Pakistan Journal of Health Sciences.2026; : 14. CrossRef
“Two birds talking” and “monkey face” Sign in hepatic encephalopathy
Qian Zheng, Jifen Wang
Acta Neurologica Belgica.2026;[Epub] CrossRef
Hepatic myelopathy as a rare but reversible neurological complication post transjugular intrahepatic portosystemic shunt (TIPS) insertion in liver cirrhosis
Angela Zhu, Warren Clements, Robb Wesselingh, Natasha Janko
European Journal of Case Reports in Internal Medicine.2026;[Epub] CrossRef
Occult cirrhosis presenting as progressive tremor: acquired hepatocerebral degeneration induced by traditional Chinese medicine and natural health products, aggravated by manganese supplements: A case report
Chuan Liu, Roumin Wang, Xiaoyan Li, Wang Ni, Gonglu Liu, Yi Dong
Medicine.2026; 105(19): e48686. CrossRef
Hepatic Encephalopathy Classification via Neuro-livo Features-Based Deep Tri-path Fused Neural Network
R. K. Shanmugha Priya, K. Suthendran
International Journal of Computational Intelligence Systems.2025;[Epub] CrossRef
Cell–cell communications in the brain of hepatic encephalopathy: The neurovascular unit
Kyuwan Choi, Yena Cho, Yerin Chae, So Yeong Cheon
Life Sciences.2025; 363: 123413. CrossRef
A Case of Hepatic Encephalopathy With Diffuse Brainstem Signal Changes on Magnetic Resonance Imaging
Hiromu Yurimoto, Taiki Matsubayashi, Isamu Shibata, Misako Furuki, Masato Obayashi
Cureus.2025;[Epub] CrossRef
Brain Changes in Alcohol Induced Liver Cirrhosis Patients: Insights from Quantitative Susceptibility Mapping
Andrej Vovk, Stefan Ropele, Sebastian Stefanovic, Borut Stabuc, Dusan Suput, Marjana Turk Jerovsek, Gasper Zupan
Biomedicines.2025; 13(12): 2937. CrossRef
Pattern Clustering of Symmetric Regional Cerebral Edema on Brain MRI in Patients with Hepatic Encephalopathy
Chun Geun Lim, Hui Joong Lee
Journal of the Korean Society of Radiology.2024; 85(2): 381. CrossRef
Response to “Brain Lesions in Liver Cirrhosis May Not Only Be Due to Hepatic Encephalopathy”
Hui Joong Lee
Journal of the Korean Society of Radiology.2024; 85(4): 827. CrossRef
Altered Mental Status in the Solid-Organ Transplant Recipient
Nicolas Weiss, Henning Pflugrad, Prem Kandiah
Seminars in Neurology.2024; 44(06): 670. CrossRef
Reversibility of structural and functional alterations of hepatic encephalopathy
Henning Pflugrad, Ann-Katrin Hennemann
Metabolic Brain Disease.2024;[Epub] CrossRef
Rule out all differential causes before attributing cerebral bleeding to 5-aminolevulinic acid
Josef Finsterer, Sounira Mehri
Child's Nervous System.2023; 39(4): 847. CrossRef
Minimal hepatic encephalopathy: clinical, neurophysiological, neuroimaging markers
P. I. Kuznetsova, A. A. Raskurazhev, S. N. Morozova, I. M. Lovchev, M. S. Novruzbekov, M. M. Tanashyan
Russian neurological journal.2023; 28(5): 21. CrossRef
Prevalence of Precipitating Factors of Hepatic Encephalopathy at Nangarhar Regional Hospital
Ameerullah Razai, Ismail Khan Safi, Said Abdul Jamil Saidi, Said Inam Saidi
Nangarhar University International Journal of Biosciences.2023; : 34. CrossRef

Case report

Orthopedics and Sports Medicine
Transient osteoporosis of the hip with a femoral neck fracture during follow-up: a case report: Yusuke Tabata, Shuhei Matsui, Masabumi Miyamoto, Koichiro Omori, Yoichiro Tabata, Tokifumi Majima; J Yeungnam Med Sci. 2023;40(2):212-217. Published online September 26, 2022; DOI: https://doi.org/10.12701/jyms.2022.00479

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Abstract PDF

We report a case of transient osteoporosis of the hip with a femoral neck fracture found during follow-up. A 53-year-old man presented with left hip pain without trauma. The pain did not improve after 2 weeks and he was brought to our hospital by ambulance. Magnetic resonance imaging (MRI) of the left hip joint showed diffuse edema in the bone marrow, which was identified by low signal intensity on T1-weighted images, high signal intensity on T2-weighted images, and increased signal intensity on short tau inversion recovery. This edema extended from the femoral head and neck to the intertrochanteric area. He was diagnosed with transient osteoporosis of the left hip. Rest gradually improved his pain; however, 3 weeks later, his left hip pain worsened without trauma. X-ray, computed tomography, and MRI results of the hip joint demonstrated a left femoral neck fracture, and osteosynthesis was performed. Differential diagnoses included avascular necrosis of the femoral head, infection, complex regional pain syndrome, rheumatoid arthritis, leukemia, and other cancers. Transient osteoporosis of the hip generally has a good prognosis with spontaneous remission within a few months to 1 year. However, a sufficient length of follow-up from condition onset to full recovery is necessary to avoid all probable complications such as fractures.

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Stress Fracture Along with Transient Osteoporosis in a 72-Year-Old Female with Hip Pain: A Case Report
Khalil Kargar Shooraki, Arash Aris, Masih Rikhtehgar
Orthopedic Research and Reviews.2026; Volume 18: 1. CrossRef
Cracking the Case: Post-pregnancy Bilateral Femoral Fragility, a Rare Clinical Challenge
Jijisha Ali, Janaki Gopalan, Youssef Fallaha, Shriganesh Patil, Rida M Maryum
Cureus.2025;[Epub] CrossRef
Core decompression combined with allogeneic fibular grafting for refractory transient osteoporosis of the hip: a case report and literature review
Cong Chen, Tian-en Xu, Hua-sha Jiang, Chun-lan Shi, Xu Wang, Ya-yi Xia, Ya-peng Wang
BMC Surgery.2025;[Epub] CrossRef
Hip effusion/synovitis influences results after multiple drilling core decompression for bone marrow edema syndrome of hip
Hua-zhang Xiong, Yan-li Peng, Yu-hong Deng, Ying Jin, Ming-hong Tu, Shu-hong Wu
BMC Surgery.2023;[Epub] CrossRef

Resident fellow section: Teaching images

Musculoskeletal Disorders
A 40-year-old man with neuropathic pain in the entire left foot: Jae Hwa Bae, Mathieu Boudier-Revéret, Min Cheol Chang; J Yeungnam Med Sci. 2023;40(2):223-224. Published online August 30, 2022; DOI: https://doi.org/10.12701/jyms.2022.00486

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Focused Review article

Anesthesiology and Pain Medicine
Ultrasound-guided interventions for controlling the thoracic spine and chest wall pain: a narrative review: Donghwi Park, Min Cheol Chang; J Yeungnam Med Sci. 2022;39(3):190-199. Published online April 26, 2022; DOI: https://doi.org/10.12701/jyms.2022.00192

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Abstract PDF

Ultrasound-guided injection is useful for managing thoracic spine and chest wall pain. With ultrasound, pain physicians perform the injection with real-time viewing of major structures, such as the pleura, vasculature, and nerves. Therefore, the ultrasound-guided injection procedure not only prevents procedure-related adverse events but also increases the accuracy of the procedure. Here, ultrasound-guided interventions that could be applied for thoracic spine and chest wall pain were described. We presented ultrasound-guided thoracic facet joint and costotransverse joint injections and thoracic paravertebral, intercostal nerve, erector spinae plane, and pectoralis and serratus plane blocks. The indication, anatomy, Sonoanatomy, and technique for each procedure were also described. We believe that our article is helpful for clinicians to conduct ultrasound-guided injections for controlling thoracic spine and chest wall pain precisely and safely.

Citations

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Spine Pain
Vernon B. Williams
Continuum.2024; 30(5): 1344. CrossRef
The blind spot and challenges in pain management
Min Cheol Chang
Journal of Yeungnam Medical Science.2022; 39(3): 179. CrossRef

Original article

Hematology
Clinical impact of spine magnetic resonance imaging as a valuable prognostic tool for patients with multiple myeloma: a retrospective study: Jung Min Lee, Hee Jeong Cho, Joon-Ho Moon, Sang Kyun Sohn, Byunggeon Park, Dong Won Baek; J Yeungnam Med Sci. 2022;39(4):300-308. Published online March 23, 2022; DOI: https://doi.org/10.12701/jyms.2021.01648

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Abstract PDF Supplementary Material

Background
This study investigated the prognostic impact of spine magnetic resonance imaging (MRI) in patients newly diagnosed with multiple myeloma (MM).
Methods
We retrospectively evaluated 214 patients who were newly diagnosed with MM between March 2015 and December 2019. The patients were classified into five different infiltration patterns based on spine MRI as follows: (1) normal appearance, (2) focal, (3) diffuse, (4) combined focal and diffuse infiltration, and (5) “salt-and-pepper.”
Results
Forty patients (18.7%) showed a normal appearance, whereas focal, diffuse, combined focal and diffuse infiltration, and “salt-and-pepper” patterns were identified in 68 (31.8%), 40 (18.7%), 52 (24.3%), and 14 patients (6.5%), respectively. The patients with normal and “salt-and-pepper” patterns were younger than patients with other patterns (median age, 61.6 vs. 66.8 years; p=0.001). Moreover, 63% and 59.3% of patients with normal and “salt-and-pepper” patterns were scored International Staging System (ISS) stage I and revised ISS (R-ISS) stage I, respectively, whereas only 12.5% of patients with other patterns were scored ISS stage I and R-ISS stage I. Patients with normal and “salt-and-pepper” patterns had a better prognosis than those with other patterns, whereas relapse and death rates were significantly higher in patients with focal, diffuse, and combined MRI patterns.
Conclusion
Characteristic MRI findings have a significant prognostic value for long-term survival in patients newly diagnosed with MM. In particular, focal, diffuse, and combined focal and diffuse infiltration patterns are unfavorable prognostic factors.

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Evidence-based Korean guidelines for the clinical management of multiple myeloma: addressing 12 key clinical questions
Sung-Hoon Jung, Youngil Koh, Min Kyoung Kim, Jin Seok Kim, Joon Ho Moon, Chang-Ki Min, Dok Hyun Yoon, Sung-Soo Yoon, Je-Jung Lee, Chae Moon Hong, Ka-Won Kang, Jihyun Kwon, Kyoung Ha Kim, Dae Sik Kim, Sung Yong Kim, Sung-Hyun Kim, Yu Ri Kim, Young Rok Do,
Blood Research.2025;[Epub] CrossRef
Lesions of the spinal cord caused by multiple myeloma: A systematic review and meta-analysis regarding the neurosurgical aspects of patient management
Daniel Encarnacion, Gennady E Chmutin, Ismail Bozkurt, Jack Wellington, Emmanuel Batista Geraldino, Bipin Chaurasia
Journal of Craniovertebral Junction and Spine.2023; 14(4): 313. CrossRef

Case report

Obstetrics, Gynecology, and Reproductive Medicine
Posterior reversible encephalopathy syndrome related to anemia correction in a patient with uterine myoma: a case report: Jisun Lee, Hyun Jung Lee; J Yeungnam Med Sci. 2022;39(4):336-340. Published online September 23, 2021; DOI: https://doi.org/10.12701/yujm.2021.01375

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Abstract PDF Supplementary Material

Although posterior reversible encephalopathy syndrome (PRES) is induced by various causes, a few cases have occurred after severe anemia correction. In this case report, a 45-year-old female patient visited emergency department with a chief complaint of dizziness due to severe anemia related to hypermenorrhea caused by uterine myoma. Before her operation, she had an abrupt headache and seizure during anemia correction with transfusion and injection of gonadotropin-releasing hormone agonist. Immediately after the operation, she experienced visual disturbances, followed by limb weakness and tonic-clonic movements. Magnetic resonance imaging showed alterations in parietal and occipital lobes suggesting cerebrovascular edema with hypoperfusion. Here, we presented and discussed the clinical and radiologic features of PRES related to anemia correction.

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Posterior reversible encephalopathy syndrome following blood transfusion and GnRH agonist
Sanjai Subha, Donal Skelly, Damian Jenkins
Practical Neurology.2026; : pn-2025-004949. CrossRef
Blood transfusion induced posterior reversible encephalopathy syndrome in a case of abnormal uterine bleeding-polyps with chronic very severe anaemia
Anindya S. Ghatak, Tapas Sarangi
International Journal of Research in Medical Sciences.2026; 14(5): 2128. CrossRef
Posterior Reversible Encephalopathy Syndrome (PRES) following blood transfusion in a polytrauma victim, an atypical occurrence
Erum Shariff, Nehad Mahmoud Soltan
Turkish Journal of Emergency Medicine.2024; 24(3): 180. CrossRef
Fatal posterior reversible encephalopathy syndrome after blood transfusion in a patient with myelodysplastic syndromes
Ken Takigawa, Takahiro Shima, Chiaki Kubara, Shun Akamine, Sae Utsumi, Teruhiko Yoshino, Mariko Minami, Masayasu Hayashi, Yayoi Matsuo, Takuro Kuriyama, Reiko Yoneda, Shuichi Taniguchi, Tetsuya Eto
Transfusion.2024; 64(9): 1791. CrossRef

Original article

Radiation Oncology
Clinical performance of FractionLab in patient-specific quality assurance for intensity-modulated radiotherapy: a retrospective study: Se An Oh, Sung Yeop Kim, Jaehyeon Park, Jae Won Park, Ji Woon Yea; J Yeungnam Med Sci. 2022;39(2):108-115. Published online September 9, 2021; DOI: https://doi.org/10.12701/yujm.2021.01123

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Abstract PDF

Background
This study was aimed at comparing and analyzing the results of FractionLab (Varian/Mobius Medical System) with those of portal dosimetry that uses an electronic portal imaging device. Portal dosimetry is extensively used for patient-specific quality assurance (QA) in intensity-modulated radiotherapy (IMRT).
Methods
The study includes 29 patients who underwent IMRT on a Novalis-Tx linear accelerator (Varian Medical System and BrainLAB) between June 2019 and March 2021. We analyzed the multileaf collimator (MLC) DynaLog files generated after portal dosimetry to evaluate the same condition using FractionLab. The results of the recently launched FractionLab at various gamma indices (0.1%/0.1 mm–1%/1 mm) are analyzed and compared with those of portal dosimetry (3%/3 mm).
Results
The average gamma passing rates of portal dosimetry (3%/3 mm) and FractionLab are 98.1 (95.5%–100%) and 97.5% (92.3%–99.7%) at 0.6%/0.6 mm, respectively. The results of portal dosimetry (3%/3 mm) are statistically comparable with the QA results of FractionLab (0.6%/0.6 mm–0.9%/0.9 mm).
Conclusion
This paper presents the clinical performance of FractionLab by the comparison of the QA results of FractionLab using portal dosimetry with various gamma indexes when performing patient-specific QA in IMRT treatment. Further, the appropriate gamma index when performing patient-specific QA with FractionLab is provided.

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Impact of Multileaf Collimator Width and Normal Tissue Objective on Radiation Dose Distribution in Stereotactic Radiosurgery Using HyperArc for Single Brain Lesions
Se An Oh, Jae Won Park, Ji Woon Yea, Jaehyeon Park, Yoon Young Jo
Current Oncology.2025; 32(5): 272. CrossRef
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Ji Young Bae, Sung Yeop Kim, Jae Won Park, Jaehyeon Park, Ji Woon Yea, Yoon Young Jo, Se An Oh
Progress in Medical Physics.2025; 36(2): 27. CrossRef

Case reports

Radiology, Radiotherapy & Diagnostic Imaging
Multilocular cystic hemangioma of the liver mimicking mucinous cystic neoplasm: a case report: Nam Kyung Lee, Suk Kim, Seung Baek Hong, So Jeong Lee, Hyung Il Seo; J Yeungnam Med Sci. 2022;39(1):53-57. Published online April 7, 2021; DOI: https://doi.org/10.12701/yujm.2021.00969

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Abstract PDF

Hepatic hemangiomas infrequently exhibit atypical imaging features, which may cause diagnostic confusion with hepatic malignancies and lead to unnecessary surgery. We report a rare case of multilocular cystic hemangioma of the liver mimicking a mucinous cystic neoplasm of the liver in a 48-year-old female, focusing on computed tomography and magnetic resonance imaging features and their differential diagnosis.

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Non-infectious Hepatic Cystic Lesions: A Narrative Review
Adem Ceri, Andreas Busse-Coté, Delphine Weil, Eric Delabrousse, Vincent Di Martino, Paul Calame
Current Medical Imaging Formerly Current Medical Imaging Reviews.2025;[Epub] CrossRef
Case series multilocular cystic hemangioma of the liver: Three cases and literature review
Chunmiao Liang, RiSheng Yu, Liuhong Wang, Ying Chen
Medicine.2024; 103(33): e39287. CrossRef

Musculoskeletal Disorders
Ultrasonographic and magnetic resonance images of a gluteus maximus tear: Jong Bum Kim, Wonho Lee, Min Cheol Chang; Yeungnam Univ J Med. 2021;38(2):157-159. Published online July 31, 2020; DOI: https://doi.org/10.12701/yujm.2020.00500

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Abstract PDF

The diagnosis of a gluteal muscle tear or strain is based on clinical findings. However, for an accurate diagnosis, imaging examinations are also needed. Herein, we describe the case of a patient with a gluteus maximus muscle tear confirmed by ultrasonography (US) and magnetic resonance imaging (MRI). A 58-year-old woman complained of dull pain in the left lateral gluteal region that she had been experiencing for 8 days. In the axial US image, retraction of the left gluteus maximus muscle was noted around its insertion site in the iliotibial band. On an MRI, a partial tear in the left gluteus maximus was observed at its insertion site in the left iliotibial band. In addition, fluid infiltration due to edema and hemorrhage was observed. A partial left gluteal muscle tear was diagnosed. The patient was treated with physical therapy at the involved region and oral analgesics. She reported relief from the pain after 1 month of treatment. Based on this experience, we recommend US or MRI for accurate diagnosis of muscle tear or strain.

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Gluteus Maximus Distal Myotendinous Junction Tear in a Pickleball Player: A Case Report
Shanterian King, Adam Johnson, Elena Jelsing
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Min Cheol Chang, Du Hwan Kim
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World Journal of Clinical Cases.2021; 9(34): 10728. CrossRef

Review articles

Gastroenterology and Hepatology
Gallbladder polyps: evolving approach to the diagnosis and management: Kook Hyun Kim; Yeungnam Univ J Med. 2021;38(1):1-9. Published online May 15, 2020; DOI: https://doi.org/10.12701/yujm.2020.00213

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Abstract PDF

Gallbladder (GB) polyp is a mucosal projection into the GB lumen. With increasing health awareness, GB polyps are frequently found using ultrasonography during health screening. The prevalence of GB polyps ranges between 1.3% and 9.5%. Most patients are asymptomatic and have benign characteristics. Of the nonneoplastic polyps, cholesterol polyps are most common, accounting for 60%–70% of lesions. However, a few polyps have malignant potential. Currently, the guidelines recommend laparoscopic cholecystectomy for polyps larger than 1 cm in diameter due to their malignan potential. The treatment algorithm can be influenced by the size, shape, and numbers of polyps, old age (>50 years), the presence of primary sclerosing cholangitis, and gallstones. This review summarizes the commonly recognized concepts on GB polyps from diagnosis to an algorithm of treatment.

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Incidental Gallbladder Polyps – A Case Report on Diagnostic Dilemmas and Management Uncertainty
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Danning tablets for the treatment of multiple gallbladder polyps: Study protocol of multicentre, randomised, open-labelled, controlled trial
Tian Yang, Ming-Da Wang, Gui-Lin Xie, Xiong-Hua Wang, Liu Zheng, Li-Min Wang, Guang-Fa Xiao, Yong-Qing Yang, Chao Li, Alfred Wei Chieh Kow, Feng Shen
iLIVER.2024; 3(4): 100127. CrossRef
Endoscopic ultrasound-guided gallbladder endoscopic mucosal resection: a pilot porcine study
Huifang Pang, Quan Man, Li Min, Zheng Zhang, Shengtao Zhu, Shuyue Yang, Yao Xu, Haijun Hou, Shutian Zhang, Peng Li
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Anesthesiology and Pain Medicine
Drug selection for sedation and general anesthesia in children undergoing ambulatory magnetic resonance imaging: Sung Mee Jung; Yeungnam Univ J Med. 2020;37(3):159-168. Published online April 17, 2020; DOI: https://doi.org/10.12701/yujm.2020.00171

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Abstract PDF

The demand for drug-induced sedation for magnetic resonance imaging (MRI) scans have substantially increased in response to increases in MRI utilization and growing interest in anxiety in children. Understanding the pharmacologic options for deep sedation and general anesthesia in an MRI environment is essential to achieve immobility for the successful completion of the procedure and ensure rapid and safe discharge of children undergoing ambulatory MRI. For painless diagnostic MRI, a single sedative/anesthetic agent without analgesia is safer than a combination of multiple sedatives. The traditional drugs, such as chloral hydrate, pentobarbital, midazolam, and ketamine, are still used due to the ease of administration despite low sedation success rate, prolonged recovery, and significant adverse events. Currently, dexmedetomidine, with respiratory drive preservation, and propofol, with high effectiveness and rapid recovery, are preferred for children undergoing ambulatory MRI. General anesthesia using propofol or sevoflurane can also provide predictable rapid time to readiness and scan times in infant or children with comorbidities. The selection of appropriate drugs as well as sufficient monitoring equipment are vital for effective and safe sedation and anesthesia for ambulatory pediatric MRI.

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Original articles

Obstetrics, Gynecology, and Reproductive Medicine
Usefulness of subtraction pelvic magnetic resonance imaging for detection of ovarian endometriosis: Hyun Jung Lee; Yeungnam Univ J Med. 2020;37(2):90-97. Published online October 10, 2019; DOI: https://doi.org/10.12701/yujm.2019.00353

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Abstract PDF

Background
To minimize damage to the ovarian reserve, it is necessary to evaluate the follicular density in the ovarian tissue surrounding endometrioma on preoperative imaging. The purpose of the present study was to evaluate the usefulness of subtraction pelvic magnetic resonance imaging (MRI) to detect ovarian reserve.
Methods
A subtracted T1-weighted image (subT1WI) was obtained by subtracting unenhanced T1WI from contrast-enhanced T1WI (ceT1WI) with similar parameters in 22 patients with ovarian endometrioma. The signal-to-noise ratio (SNR) in ovarian endometrioma, which was classified into the high signal intensity and iso-to-low signal intensity groups on the T2-weighted image, was compared to that in normal ovarian tissue. To evaluate the effect of contrast enhancement, a standardization map was obtained by dividing subT1WI by ceT1WI.
Results
On visual assessment of 22 patients with ovarian endometrioma, 16 patients showed a high signal intensity, and 6 patients showed an iso-to-low signal intensity on T1WI. Although SNR in endometrioma with a high signal intensity was higher than that with an iso-to-low signal intensity, there was no difference in SNR after the subtraction (13.72±77.55 vs. 63.03±43.90, p=0.126). The area of the affected ovary was smaller than that of the normal ovary (121.10±22.48 vs. 380.51±75.87 mm2, p=0.002), but the mean number of pixels in the viable remaining tissue of the affected ovary was similar to that of the normal ovary (0.53±0.09 vs. 0.47±0.09, p=0.682).
Conclusion
The subtraction technique used with pelvic MRI could reveal the extent of endometrial invasion of the normal ovarian tissue and viable remnant ovarian tissue.

Citations

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Integrative Profiling of the Ovarian Reserve using Ultrasound and MRI Data by Comparative Analysis: A Systematic Review
Kudryavtseva Varvara A., Narasimha M. Beeraka, Moiseeva Aleksandra V., Moshkin Andrey S., Gevorgyan Marine M., Vinnik Yurii Yu, Butko Dmitry Yu, Akhila Chagalamari, Padmanabha Reddy Yiragamreddy, Basappa Basappa, Vladimir N. Nikolenko
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Carly Pellow, Siyun Li, Sagid Delgado, G Bruce Pike, Laura Curiel, Samuel Pichardo
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Magnetic resonance imaging texture analysis for the evaluation of viable ovarian tissue in patients with ovarian endometriosis: a retrospective case-control study
Dayong Lee, Hyun Jung Lee
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Nijie Jiang, Hong Xie, Jiao Lin, Yun Wang, Yanan Yin, Arpit Bhardwaj
Computational Intelligence and Neuroscience.2022; 2022: 1. CrossRef

Radiology, Radiotherapy & Diagnostic Imaging
Assessment of solid components of borderline ovarian tumor and stage I carcinoma: added value of combined diffusion- and perfusion-weighted magnetic resonance imaging: See Hyung Kim; Yeungnam Univ J Med. 2019;36(3):231-240. Published online June 13, 2019; DOI: https://doi.org/10.12701/yujm.2019.00234; Correction in: J Yeungnam Med Sci 2020;37(2):147

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Abstract PDF

Background
We sought to determine the value of combining diffusion-weighted (DW) and perfusion-weighted (PW) sequences with a conventional magnetic resonance (MR) sequence to assess solid components of borderline ovarian tumors (BOTs) and stage I carcinomas.
Methods
Conventional, DW, and PW sequences in the tumor imaging studies of 70 patients (BOTs, n=38; stage I carcinomas, n=32) who underwent surgery with pathologic correlation were assessed. Two independent radiologists calculated the parameters apparent diffusion coefficient (ADC), Ktrans (vessel permeability), and Ve (cell density) for the solid components. The distribution on conventional MR sequence and mean, standard deviation, and 95% confidence interval of each DW and PW parameter were calculated. The inter-observer agreement among the two radiologists was assessed. Area under the receiver operating characteristic curve (AUC) and multivariate logistic regression were performed to compare the effectiveness of DW and PW sequences for average values and to characterize the diagnostic performance of combined DW and PW sequences.
Results
There were excellent agreements for DW and PW parameters between radiologists. The distributions of ADC, Ktrans and Ve values were significantly different between BOTs and stage I carcinomas, yielding AUCs of 0.58 and 0.68, 0.78 and 0.82, and 0.70 and 0.72, respectively, with ADC yielding the lowest diagnostic performance. The AUCs of the DW, PW, and combined PW and DW sequences were 0.71±0.05, 0.80±0.05, and 0.85±0.05, respectively.
Conclusion
Combining PW and DW sequences to a conventional sequence potentially improves the diagnostic accuracy in the differentiation of BOTs and stage I carcinomas.

Citations

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Dynamic versus nondynamic magnetic resonance imaging (MRI) protocols in Ovarian-Adnexal Reporting and Data System for magnetic resonance imaging (O-RADS MRI) scoring of adnexal masses: a comparative performance analysis
A.A. Peker, Z. Dönmez, A. Akçay, H. Toprak, M.A. Gülteki̇n
Clinical Radiology.2026; 95: 107255. CrossRef
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Qiulin Ye, Yue Qi, Juanjuan Liu, Yuexin Hu, Xiao Li, Qian Guo, Danye Zhang, Bei Lin
BMC Cancer.2025;[Epub] CrossRef
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Emek Bakanoğlu Kalkavan
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Comparison of conventional diffusion-weighted imaging, diffusion kurtosis imaging and intravoxel incoherent motion in characterization of sonographically indeterminate adnexal masses
Gurkawal Kaur, Smita Manchanda, Raju Sharma, Surabhi Vyas, Devasenathipathy Kandasamy, Smriti Hari, Neerja Bhatla, Sandeep R. Mathur
Abdominal Radiology.2024; 49(5): 1512. CrossRef
Advances in fertility preserving surgery for borderline ovarian tumors
Mingdan Wang, Kuiran Liu
European Journal of Obstetrics & Gynecology and Reproductive Biology.2022; 270: 206. CrossRef
Recurrence characteristics and clinicopathological results of borderline ovarian tumors
Lina Niu, Huihui Tian, Yongjun Xu, Jieqiong Cao, Xu Zhang, Junli Zhang, Jiajia Hou, Weiqin Lv, Junxia Wang, Li Xin, XuFeng Dong, Tao Xu, Yuan Nan, Hua Wei, Xinting Chai, Na Li, Yan Ni, Yun Shang, Lizhen Zhang, Ye Zhao
BMC Women's Health.2021;[Epub] CrossRef
Erratum to “Assessment of solid components of borderline ovarian tumor and stage I carcinoma: added value of combined diffusion- and perfusion-weighted magnetic resonance imaging”
See Hyung Kim
Yeungnam University Journal of Medicine.2020; 37(2): 147. CrossRef
Minimal apparent diffusion coefficient value of the solid component to differentiate borderline and malignant ovarian epithelial tumours: a preliminary report
Sahat B.R.E. Matondang, Avrilia Ekawati, Andrijono Andrijono, Hartono Tjahjadi, Joedo Prihartono
Polish Journal of Radiology.2020; 85: 250. CrossRef

Review Article

Aging
Can we rejuvenate? Implications of biological aging research: Youlim Son, Jae Ryong Kim; Yeungnam Univ J Med. 2017;34(1):1-10. Published online June 30, 2017; DOI: https://doi.org/10.12701/yujm.2017.34.1.1

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Abstract PDF: The life history of man is summarized as a birth-aging-disease-death. Man eventually ages and dies. How long can humans live? What is aging? Why do we age? Is aging inevitable? Can we rejuvenate? Recent researches on biological aging suggest that humans might overcome aging and rejuvenate. In this paper, we review the biologic characteristics of aging and the latest results of biological aging research, implicating that aging can be controlled, further treated, and that humans can ultimately be rejuvenated.

Case Report

Physical therapy, Sports Therapy, and Rehabilitation
Visual recovery demonstrated by functional MRI and diffusion tensor tractography in bilateral occipital lobe infarction.: Jeong Pyo Seo, Sung Ho Jang; Yeungnam Univ J Med. 2014;31(2):152-156. Published online December 31, 2014; DOI: https://doi.org/10.12701/yujm.2014.31.2.152

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3 Download
1 Crossref

Abstract PDF

We report on a patient who showed visual recovery following bilateral occipital lobe infarct, as evaluated by follow up functional magnetic resonance imaging (fMRI) and diffusion tensor tractography (DTT). A 56-year-old female patient exhibited severe visual impairment since onset of the cerebral infarct in the bilateral occipital lobes. The patient complained that she could not see anything, although the central part of the visual field remained dimly at 1 week after onset. However, her visual function has shown improvement with time. As a result, at 5 weeks after onset, she notified that her visual field and visual acuity had improved. fMRI and DTT were acquired at 1 week and 4 weeks after onset, using a 1.5-T Philips Gyroscan Intera. The fiber number of left optic radiation (OR) increased from 257 (1-week) to 353 (4-week), although the fiber numbers for right OR were similar. No activation in the occipital lobe was observed on 1-week fMRI. By contrast, activation of the visual cortex, including the bilateral primary visual cortex, was observed on 4-week fMRI. We demonstrated visual recovery in this patient in terms of the changes observed on DTT and fMRI. It appears that the recovery of the left OR was attributed more to resolution of local factors, such as peri-infarct edema, than brain plasticity.

Citations

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Diffusion Tensor Imaging Studies on Recovery of Injured Optic Radiation: A Minireview
Eun Bi Choi, Sung Ho Jang
Neural Plasticity.2020; 2020: 1. CrossRef

Review Articles

Nuclear Medicine
Clinical Application of Cardiac Hybrid Imaging in Coronary Artery Disease.: Ihn Ho Cho, Eun Jung Kong; Yeungnam Univ J Med. 2009;26(1):15-23. Published online June 30, 2009; DOI: https://doi.org/10.12701/yujm.2009.26.1.15

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Abstract PDF: Constant technological developments in coronary artery disease have contributed to the assessment of both the presence of coronary stenosis and its hemodynamic consequences. Hence, noninvasive imaging helps guide therapeutic decisions by providing complementary information on coronary morphology and on myocardial perfusion and metabolism. This can be done using single photon emission computed tomography(SPECT) or positron emission tomography(PET) and multidetector CT(MDCT). Advances in image-processing software and the advent of SPECT/CT and PET/CT have paved the way for the combination of image datasets from different modalities, giving rise to hybrid imaging. Three dimensional cardiac hybrid imaging helped to confirm hemodynamic significance in many lesions, add new lesions such as left main coronay artery disease, exclude equivocal defects, correct the corresponding arteries to their allocated defects and identify culprit segment. Cardiac hybrid imaging avoids the mental integration of functional and morphologic images and facilitates a comprehensive interpretation of coronary lesions and their pathophysiologic adequacy by three dimensional display of fused images, and allows the best evaluation of myocardial territories and the coronary-artery branches that serve each territory. This integration of functional and morphological information were feasible to intuitively convincing and might facilitate developmnt of a comprehensive non-invasive assessment of coronary artery disease.

Surgery
Treatment of Advanced Gastric Cancer: Sun-Kyo Song; Yeungnam Univ J Med. 2007;24(2 Suppl):S125-131. Published online December 31, 2007; DOI: https://doi.org/10.12701/yujm.2007.24.2S.S125

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Abstract PDF: Curative surgery is the most common and desirable treatment for advanced gastric cancer(AGC), but macroscopically curative resection of AGC dose not always mean a curative outcome. For the tailored management of AGC, accurate preoperative stage are made by using abdominal CT, FDG PET and laparoscopy is necessary. In case of T₃/T₄ lesion, neoadjuvant chemotherapy(NAC) and neoadjuvant chemoradiotherapy(NACR) are effective therapeutic approaches with acceptable toxicity without increasing surgical morbidity and mortality. I recommend the use of a multidisciplinary therapeutic strategy for treatment of AGC. Future applications of newer cytotoxic drugs such as oxaliplatin, capecitabine, irinotecan, and docetaxel or targeted therapies may help to improve the management of AGC.

Original Article

Otorhinolaryngology
Evaluation of Computed Tomography and Magnetic Resonance Imaging of Sinonasal Inverted Papilloma.: Chang Hoon Bai, Young Jung Seo, Seok Choon Lee, Seung Min Chen, Un Hoi Baek, Eun Chae Jung, Si Youn Song, Yong Dae Kim; Yeungnam Univ J Med. 2005;22(2):191-198. Published online December 31, 2005; DOI: https://doi.org/10.12701/yujm.2005.22.2.191

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Abstract PDF: BACKGROUND
Computed tomography (CT) is commonly used to evaluate the degree of sinus involvement in cases of inverted papilloma (IP). However, CT cannot differentiate tumor from adjacent inflammatory mucosa or retained secretions. By contrast, magnetic resonance imaging (MRI) has been reported to be useful in distinguishing IP from paranasal sinusitis. This study investigated whether preoperative assessment with MRI and CT accurately predict the extent of IP. MATERIALS AND METHODS: CT and MRI were retrospectively reviewed in 9 cases of IP. Patients were categorized into stages based on CT and MRI findings, according to the staging system proposed by Krouse. The involvement of IP in each sinus was also assessed. RESULTS: Differentiation of IP from inflammatory disease may be more successful in routine cases where the inflammatory mucosa has low signal intensity on T1-weighted images and very high signal intensity on T2-weighted images. CT imaging could not differentiate tumor from adjacent inflammatory mucosa or retained secretions. CONCLUSION: Preoperative MRI of IP can predict the location and extent of the tumor involvement in the paranasal sinuses and sometimes predicts malignant changes.

Review Article

Physical therapy, Sports Therapy, and Rehabilitation
Motor Recovery in Stroke Patients.: Sung Ho Jang, Yong Hyun Kwon; Yeungnam Univ J Med. 2005;22(2):119-130. Published online December 31, 2005; DOI: https://doi.org/10.12701/yujm.2005.22.2.119

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Abstract PDF: Stroke is a leading cause of chronic physical disability. The recent randomized controlled trials have that motor function of chronic stroke survivors could be improved through physical or pharmacologic intervention in the stroke rehabilitation setting. In addition, several functional neuroimaging techniques have recently developed, it is available to study the functional topography of sensorimotor area of the brain. However, the mechanisms involved in motor recovery after stroke, are still poorly understood. Four motor recovery mechanisms have been suggested, such as reorganization into areas adjacent to the injured primary motor cortex (M1), unmasking of the motor pathway from the unaffected motor cortex to the affected hand, attribution of secondary motor areas, and recovery of the damaged contralateral corticospinal tract. Understanding the motor recovery mechanisms would provide neurorehabilitation specialists with more information to allow for precise prognosis and therapeutic strategies based on the scientific evidence; this may help promote recovery of motor function. This review introduces several methodologies for neuroimaging techniques and discusses theoretical issues that impact interpretation of functional imaging studies of motor recovery after stroke. Perspectives, for future research are presented.

Case Report

Physical therapy, Sports Therapy, and Rehabilitation
Evidence of Cortical Reorganization in a Monoparetic Patient with Cerebral Palsy Detected by Combined Functional MRI and TMS.: Yong Hyun Kwon, Sung Ho Jang, Mi Young Lee, Woo Mok Byun, Yoon Woo Cho, Sang Ho Ahn; Yeungnam Univ J Med. 2005;22(1):96-103. Published online June 30, 2005; DOI: https://doi.org/10.12701/yujm.2005.22.1.96

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Abstract PDF: The motor recovery mechanism of a 21-year-old male monoparetic patient with cerebral palsy, who had complained of a mild weakness on his right hand since infancy, was examined using functional Magnetic Resonance Imaging (fMRI) and Transcranial Magnetic Stimulation (TMS). The patient showed mild motor impairment on the right hand. MRI located the main lesion on the left precentral knob of the brain. fMRI was performed on this patient as well as 8 control subjects using the Blood Oxygen Level Dependent technique at 1.5 T with a standard head coil. The motor activation task consisted of finger flexion- extension exercises at 1 Hz cycles. TMS was carried out using a round coil. The anterior portion of the coil was applied tangentially to the scalp at a 1.0 cm separation. Magnetic stimulation was carried out with the maximal output. The Motor Evoked Potentials (MEPs) from both Abductor Pollicis Brevis muscles (APB) were obtained simultaneously. fMRI revealed that the unaffected (right) primary sensori-motor cortex (SM1), which was centered on precentral knob, was activated by the hand movements of the control subjects as well as by the unaffected (left) hand movements of the patient. However, the affected (right) hand movements of the patient activated the medial portion of the injured precentral knob of the left SM1. The optimal scalp site for the affected (right) APB was located at 1 cm medial to that of the unaffected (left) APB. When the optimal scalp site was stimulated, the MEP characteristics from the affected (right) APB showed a delayed latency, lower amplitude, and a distorted figure compared with that of the unaffected (left) APB. Therefore, the motor function of the affected (right) hand was shown to be reorganized in the medial portion of the injured precentral knob.

Original Articles

Obstetrics, Gynecology, and Reproductive Medicine
MR Imaging of Uterine Malignant Mixed Mullerian Tumor: Comparison with Endometrial Carcinoma.: Jae Ho Cho, Jeen Woo Kim, Jay Chun Chang, Bok Hwan Park, Jung Sik Kim; Yeungnam Univ J Med. 1999;16(2):296-301. Published online December 31, 1999; DOI: https://doi.org/10.12701/yujm.1999.16.2.296

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Abstract PDF: BACKGROUND
Generally, it is difficult to differentiate uterine malignant mixed Mullerian Tumor(MMMT) from endometrial carcinom in radiological and clinical aspects. Our purpose is to investigate MR findings that distinguishes MMMT from endometrial carcinoma. MATERIALS AND METHODS: We retrogradely evaluated the magnetic resonance imaging findings of pathologically proven 5 cases of malignant mixed Mullerian Tumor(MMMT) and 13 endometrial carcinomas to know the differential points of these two tumors originating in the endometrial cavity. The size of the mass, presence or absence of myometrial or uterine cervical invasion, growth pattern of the mass, signal intensity and degree and pattern of contrast enhancement were analyzed and compared. RESULTS: The length of the long axis of the MMMT was 1.5-9.0cm(average, 5.7cm) but that of the endometrial carcinoma was 0.5-6.0cm(average, 2.5cm). Invasion of uterine cervix which was found in 3 MMMT cases, dilated the endometrial cavity and the lumen of the uterin cervix and showed the pattern of growing into the external os. Invasion of uterine cervix was found in only one case of endometrial carcinoma. The presence or absence of myometrial invasion, the signal intensity and homogeneity on T1-and T2-weighted images, and the degree and patterns of contrase enhancement showed no significant difference. CONCLUSION: Any specific finding to differentiate MMMT from endometrial carcinoma was not ascertained. However, MMMT can be suspected if the size of the endometrial mass is greater than 5cm and if the mass dilates the enocervical canal and invades the uterine cervix.

Cardiology and Cardiovascular Medicine
Dual-Isotope SPECT Imaging with Thallium-201 and Technetium-99m MIBI in Detecting Coronary Artery Disease.: Gyu Gwang Lee, Ihn Ho Cho, Hyoung Woo Lee, Jong Sun Park, Kyu Chang Won, Dong Gu Sin, Young Jo Kim, Bong Sup Shim; Yeungnam Univ J Med. 1999;16(1):101-107. Published online June 30, 1999; DOI: https://doi.org/10.12701/yujm.1999.16.1.101

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Abstract PDF: We evaluated the results of sequential SPECT dual-isotope imaging with Tl-201 and Tc-99m MIBI in 24 patients, all of whom also had coronary angiography within the past one month. Coronary angiography showed that 12 patients had no CAD, 4 patients had one-vessel CAD, 7 patients had two-vessel CAD and 1 patient had three-vessel CAD. Serial studies of resting Tl-201 and dipyridamole stress Tc-99m MIBI were completed within 2 hours. When more then 50% of coronary artery narrowing was considered significant. The overall sensitivity and specification of CAD detection were 91.7%. The sensitivity of CAD detection in patients with one-vessel and multi-vessel diseases was 75% and 100%, respectively. Therefore, sequential dual-isotope SPECT demonstrated high sensitivity and specificity of CAD detection. In conclusion, sequential dual-isotope imaging is feasible and can be completed in a short time and may therefore enhance laboratory throughput and patient convenience.

Urology
Assessment of Perirenal Fat Infiltration in Renal Cell Carcinoma by CT.: Dae Hyoun Cho, Jae Ho Cho, Jay Chun Chang, Bok Hwan Park; Yeungnam Univ J Med. 1997;14(1):175-182. Published online June 30, 1997; DOI: https://doi.org/10.12701/yujm.1997.14.1.175

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Abstract PDF: Forty-two preoperative CT scans with renal cell carcinoma were reviewed and compared with pathologic findings to evaluate the differential points between stage I and II. Regardless of whole body staging, perirenal fat infiltrations were seen in 9 cases and the other 33 cases showed no infiltration onto perirenal fat tissue. We retrospectively reviewed them by comparing tumor size and CT findings, following three view points, lobulating contour of tumor margin, thickening of Gerota's fascia and strands in perirenal fat tissue. The size of them was 2-15 cm, size of the stage I tumors was 2-15 cm and that of stage II was 6-15 cm. In stage I(n=33), 25 cases(76%) showed smooth margin, and the others(n=8) showed lobulating contours. Thickening of Gerota's fascia was observed in 7 cases(21%) and strands in perirenal fat tissue in 14(42%). Of these, only one positive finding was seen in 7 cases(21%), 2 findings in 6(18%), 3 findings in 3(9%) and nothing in 17cases(51%). In stage II(n=9), 3 cases(34%) showed smooth margin, and the others(n=6) showed lobulating contours. Thickening of Gerota's fascia were observed in 5 cases(55%) and strands in perirenal fat tissue in 9(100%). Of these, one finding was seen in 2 cases(22%), 2 findings in 3(33%), 3 findings in 4(44%). In conclusion, it is insufficient to evaluate the perirenal fat infiltration in renal cell carcinoma with only one positive finding of 3 view points; lobulation of tumor margin, thickening of Gerota's fascia, strands in perirenal fat tissue. But if all these findings are shown, it is helpful to determinate perirenal fat infiltration of renal cell carcinoma.

Case Report

Neurology
MR imaging of internuclear ophthalmoplegia due to cerebrovascular diseases.: Suk Hee Kim, Young Ki Lee, Jung Sang Hah, Young Ju Byun, Choong Suh Park, Sun Yong Kim; Yeungnam Univ J Med. 1991;8(1):220-230. Published online June 30, 1991; DOI: https://doi.org/10.12701/yujm.1991.8.1.220

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Abstract PDF

Internuclear ophthalmoplegia is a conjugated gaze disorder characterized by impaired adduction on the side of a lesion involving the medial longitudinal fasciculus with dissociated nystagmus of the other abducting eye. Six patients with INO (who had clinical cerebrovascular diseases) underwent MR imaging and the results were as follows: 1. The MLF lesions were identified by MR imaging in 5 cases 2. The ratio of unilateral INO to bilateral INO was 5:1 3. The nature of lesions was infarction in 4 cases and hemorrhage in 1 case 4. The sites of MLE lesion were in the midbrain in 4 cases and in the pons in 1 case 5. All 5 cases of INO identified by MR imaging had other lesion sites in addition to MLE lesion.

Citations

Citations to this article as recorded by

A Case Report of Idiopathic Bilateral Internuclear Ophthalmoplegia
Ye-Jin Eom, Chul-Hee Hong
The Journal of Korean Medicine Ophthalmology and Otolaryngology and Dermatology.2016; 29(3): 177. CrossRef

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