Evaluation of machine log files/<scp>MC</scp>‐based treatment planning and delivery <scp>QA</scp> as compared to Arc<scp>CHECK QA</scp>

Stanhope, Carl; Drake, Douglas G.; Liang, Jian; Alber, M.; Söhn, Matthias; Habib, Charbel; Willcut, Virgil; Yan, Di

doi:10.1002/mp.12926

Cited by 10 publications

(12 citation statements)

References 35 publications

(73 reference statements)

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“…Stanhope et al [13] found a behavior of the dose ratio rather similar to the one shown in Figs. 6a and 6b though the ranges are smaller than ours.…”

Section: Dependence On the Pulse Repetition Ratesupporting

confidence: 62%

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Response of the ArcCHECK® device at 6 MV and 15 MV for VMAT and IMRT quality control

et al. 2020

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“…Stanhope et al [13] found a behavior of the dose ratio rather similar to the one shown in Figs. 6a and 6b though the ranges are smaller than ours.…”

Section: Dependence On the Pulse Repetition Ratesupporting

confidence: 62%

“…Other works have dealt with the physical characterization of the device [3,[9][10][11][12][13]. However, much of the tests carried out in these studies have considered only one of the diodes that are part of the device or, at most, a reduced number of them.…”

Section: Introductionmentioning

confidence: 99%

Response of the ArcCHECK® device at 6 MV and 15 MV for VMAT and IMRT quality control

et al. 2020

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“…Moreover, the conventional method ignores patient-specific anatomical variations. In comparison, a logfiles-based QA system, such as Mobi-us3D (Varian Medical System) and ArcCHECK (Sun Nuclear), will enable automation, tracking of heterogeneous anatomical dose, and allow for root-cause analysis [21].…”

Section: Discussionmentioning

confidence: 99%

Clinical performance of FractionLab in patient-specific quality assurance for intensity-modulated radiotherapy: a retrospective study

Kim

Park

et al. 2022

J Yeungnam Med Sci

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Intensity-modulated radiotherapy (IMRT) and volumetric modulated arc therapy (VMAT), which deliver the desired radiation dose to the targeted tumors with minimal radiation to the surrounding normal tissue, are extensively used in radiotherapy. IMRT technology increases the daily radiation dose (dose per fraction) based on these technical advantages and contributes significantly to patient convenience by enhancing the radiation treatment

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“…Log file analysis is a very time‐saving tool for patient QA in clinical routine. Because of these advantages, there is a growing interest in using log files with an independent Monte Carlo (MC) algorithm 18 . Haga et al investigated log file analysis for a single simple prostate plan and demonstrated that Elekta 4‐Hz log files have satisfying results for QA 19 .…”

Section: Introductionmentioning

confidence: 99%

Evaluation of 4‐Hz log files and secondary Monte Carlo dose calculation as patient‐specific quality assurance for VMAT prostate plans

Szeverinski

Kowatsch

Künzler

et al. 2021

J Applied Clin Med Phys

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Purpose: In this study, 4-Hz log files were evaluated with an independent secondary Monte Carlo dose calculation algorithm to reduce the workload for patient-specific quality assurance (QA) in clinical routine.Materials and Methods: A total of 30 randomly selected clinical prostate VMAT plans were included. The used treatment planning system (TPS) was Monaco (Elekta, Crawley), and the secondary dose calculation software was SciMoCa (Scientific-RT, Munich). Monaco and SciMoCa work with a Monte Carlo algorithm. A plausibility check of Monaco and SciMoCa was performed using an ionization chamber in the BodyPhantom (BP). First, the original Monaco RT plans were verified with SciMoCa (pretreatment QA). Second, the corresponding 4-Hz log files were converted into RT log file plans and sent to SciMoCa as on-treatment QA. MLC shift errors were introduced for one prostate plan to determine the sensitivity of on-treatment QA. For pretreatment and on-treatment QA, a gamma analysis (2%/1mm/20%) was performed and dosimetric values of PTV and OARs were ascertained in SciMoCa.Results: Plausibility check of TPS Monaco vs. BP measurement and SciMoCa vs. BP measurement showed valid accuracy for clinical VMAT QA. Using SciMoCa, there was no significant difference in PTV Dmean between RT plan and RT log file plan.Between pretreatment and on-treatment QA, PTV metrics, femur right and left showed no significant dosimetric differences as opposed to OARs rectum and bladder. The overall gamma passing rate (GPR) ranged from 96.10% to 100% in pretreatment QA and from 93.50% to 99.80% in on-treatment QA. MLC shift errors were identified for deviations larger than −0.50 mm and +0.75 mm using overall gamma criterion and PTV Dmean. Conclusion:SciMoCa calculations of Monaco RT plans and RT log file plans are in excellent agreement to each other. Therefore, 4-Hz log files and SciMoCa can replace labor-intensive phantom-based measurements as patient-specific QA.

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Evaluation of machine log files/MC‐based treatment planning and delivery QA as compared to ArcCHECK QA

Abstract: Reconstructing every log file sample with no increase in computational cost, MC-based LF QA is faster and more accurate than CS-based LF QA. Offering similar dosimetric accuracy compared to AC measurement, MC-based log files can be used for treatment planning QA.

Cited by 10 publications

References 35 publications

Response of the ArcCHECK® device at 6 MV and 15 MV for VMAT and IMRT quality control

Response of the ArcCHECK® device at 6 MV and 15 MV for VMAT and IMRT quality control

Clinical performance of FractionLab in patient-specific quality assurance for intensity-modulated radiotherapy: a retrospective study

Evaluation of 4‐Hz log files and secondary Monte Carlo dose calculation as patient‐specific quality assurance for VMAT prostate plans

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