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Original article
- Radiation Oncology
- Clinical performance of FractionLab in patient-specific quality assurance for intensity-modulated radiotherapy: a retrospective study
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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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- 2 Web of Science
- 2 Crossref
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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. -
Citations
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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 - Clinical Performance of FractionLab Using Log Files for Patient-Specific Quality Assurance in Stereotactic Radiosurgery Using Truebeam Equipped with HyperArc
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
- Impact of Multileaf Collimator Width and Normal Tissue Objective on Radiation Dose Distribution in Stereotactic Radiosurgery Using HyperArc for Single Brain Lesions
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