Validation of three-dimensional electronic portal imaging device-based PerFRACTION™ software for patient-specific quality assurance

Sait, A Aziz; Figueredo, Jason; Jones, Glenn; Jones, Kai A.; McGowan, Thomas; Kapatoes, Jeff; Ramaseshan, R.

doi:10.4103/jmp.jmp_76_18

Cited by 9 publications

(6 citation statements)

References 8 publications

(8 reference statements)

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“…Sait et al [22] found that the estimation of point dose calculated by using machine log file in PerFRACTION, is in agreement with measurements using an ionization chamber; similar results were observed in…”

Section: Discussionsupporting

confidence: 67%

Machine log file-based dose verification using novel iterative CBCT reconstruction algorithm in commercial software during volumetric modulated arc therapy for prostate cancer patients

et al. 2021

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Section: Discussionsupporting

confidence: 67%

Machine log file-based dose verification using novel iterative CBCT reconstruction algorithm in commercial software during volumetric modulated arc therapy for prostate cancer patients

et al. 2021

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“…For example, linac log files can be used as input for independent dose verification 56 . Alternatively, measured fluences with an EPID or a transmission detector can be used as input data for independent dose calculation 57‐59 …”

Section: Role Of Dose/mu Verifications In a Comprehensive Qa Programmentioning

confidence: 99%

“…56 Alternatively, measured fluences with an EPID or a transmission detector can be used as input data for independent dose calculation. [57][58][59]…”

Section: Statement Of the Problem And Tg Chargesmentioning

confidence: 99%

Report of AAPM Task Group 219 on independent calculation‐based dose/MU verification for IMRT

et al. 2021

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Independent verification of the dose per monitor unit (MU) to deliver the prescribed dose to a patient has been a mainstay of radiation oncology quality assurance (QA). We discuss the role of secondary dose/MU calculation programs as part of a comprehensive QA program. This report provides guidelines on calculationbased dose/MU verification for intensity modulated radiation therapy (IMRT) or volumetric modulated arc therapy (VMAT) provided by various modalities. We provide a review of various algorithms for "independent/second check" of monitor unit calculations for IMRT/VMAT. The report makes recommendations on the clinical implementation of secondary dose/MU calculation programs; on commissioning and acceptance of various commercially available secondary dose/MU calculation programs; on benchmark QA and periodic QA; and on clinically reasonable action levels for agreement of secondary dose/MU calculation programs. | REPORT OF AAPM TASK GROUP 219 ON INDEPENDENT CALCULATION-BASED DOSE/ MU VERIFICATION FOR IMRT

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“…Esposito et al 18 presented the validation of a back-projection software with slab and anthropomorphic phantoms. Previous works 69,70 also had validated the PerFRACTION collapsed-cone convolution/superposition algorithm with experimental measurements performed with ionization chambers and detector arrays. However, in all these works, the calculated dose and the measurements were performed at the patient level.In a forward-projection transit dosimetry software, the transit image is calculated under different conditions, as it is obtained after the patient at the EPID level and not in the patient.…”

Section: Discussionmentioning

confidence: 99%

“… 18 presented the validation of a back‐projection software with slab and anthropomorphic phantoms. Previous works 69 , 70 also had validated the PerFRACTION collapsed‐cone convolution/superposition algorithm with experimental measurements performed with ionization chambers and detector arrays. However, in all these works, the calculated dose and the measurements were performed at the patient level.…”

Section: Discussionmentioning

confidence: 99%

Validation of an in vivo transit dosimetry algorithm using Monte Carlo simulations and ionization chamber measurements

Sánchez‐Artuñedo,

Pié‐Padró,

Hermida‐López

et al. 2023

J Applied Clin Med Phys

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PurposeTransit dosimetry is a safety tool based on the transit images acquired during treatment. Forward‐projection transit dosimetry software, as PerFRACTION, compares the transit images acquired with an expected image calculated from the DICOM plan, the CT, and the structure set. This work aims to validate PerFRACTION expected transit dose using PRIMO Monte Carlo simulations and ionization chamber measurements, and propose a methodology based on MPPG5a report.MethodsThe validation process was divided into three groups of tests according to MPPG5a: basic dose validation, IMRT dose validation, and heterogeneity correction validation. For the basic dose validation, the fields used were the nine fields needed to calibrate PerFRACTION and three jaws‐defined. For the IMRT dose validation, seven sweeping gaps fields, the MLC transmission and 29 IMRT fields from 10 breast treatment plans were measured. For the heterogeneity validation, the transit dose of these fields was studied using three phantoms: 10 , 30 , and a 3 cm cork slab placed between 10 cm of solid water. The PerFRACTION expected doses were compared with PRIMO Monte Carlo simulation results and ionization chamber measurements.ResultsUsing the 10 cm solid water phantom, for the basic validation fields, the root mean square (RMS) of the difference between PerFRACTION and PRIMO simulations was 0.6%. In the IMRT fields, the RMS of the difference was 1.2%. When comparing respect ionization chamber measurements, the RMS of the difference was 1.0% both for the basic and the IMRT validation. The average passing rate with a γ(2%/2 mm, TH = 20%) criterion between PRIMO dose distribution and PerFRACTION expected dose was 96.0% ± 5.8%.ConclusionWe validated PerFRACTION calculated transit dose with PRIMO Monte Carlo and ionization chamber measurements adapting the methodology of the MMPG5a report. The methodology presented can be applied to validate other forward‐projection transit dosimetry software.

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Validation of three-dimensional electronic portal imaging device-based PerFRACTION™ software for patient-specific quality assurance

Cited by 9 publications

References 8 publications

Machine log file-based dose verification using novel iterative CBCT reconstruction algorithm in commercial software during volumetric modulated arc therapy for prostate cancer patients

Machine log file-based dose verification using novel iterative CBCT reconstruction algorithm in commercial software during volumetric modulated arc therapy for prostate cancer patients

Report of AAPM Task Group 219 on independent calculation‐based dose/MU verification for IMRT

Validation of an in vivo transit dosimetry algorithm using Monte Carlo simulations and ionization chamber measurements

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