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AAPM WGDCAB Report 372: A joint AAPM, ESTRO, ABG, and ABS report on commissioning of model-based dose calculation algorithms in brachytherapy
CHU Quebec Univ Laval, Canada; Univ Laval, Canada.
IIS La Fe Univ Valencia, Spain.
IIS La Fe Univ Valencia, Spain.
Linköping University, Department of Health, Medicine and Caring Sciences, Division of Diagnostics and Specialist Medicine. Linköping University, Faculty of Medicine and Health Sciences. Karolinska Univ Hosp, Sweden; Karolinska Inst, Sweden.ORCID iD: 0000-0002-4549-8303
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2023 (English)In: Medical physics (Lancaster), ISSN 0094-2405, Vol. 50, no 8, p. e946-e960Article in journal (Refereed) Published
Abstract [en]

The introduction of model-based dose calculation algorithms (MBDCAs) in brachytherapy provides an opportunity for a more accurate dose calculation and opens the possibility for novel, innovative treatment modalities. The joint AAPM, ESTRO, and ABG Task Group 186 (TG-186) report provided guidance to early adopters. However, the commissioning aspect of these algorithms was described only in general terms with no quantitative goals. This report, from the Working Group on Model-Based Dose Calculation Algorithms in Brachytherapy, introduced a field-tested approach to MBDCA commissioning. It is based on a set of well-characterized test cases for which reference Monte Carlo (MC) and vendor-specific MBDCA dose distributions are available in a Digital Imaging and Communications in Medicine-Radiotherapy (DICOM-RT) format to the clinical users. The key elements of the TG-186 commissioning workflow are now described in detail, and quantitative goals are provided. This approach leverages the well-known Brachytherapy Source Registry jointly managed by the AAPM and the Imaging and Radiation Oncology Core (IROC) Houston Quality Assurance Center (with associated links at ESTRO) to provide open access to test cases as well as step-by-step user guides. While the current report is limited to the two most widely commercially available MBDCAs and only for Ir-192-based afterloading brachytherapy at this time, this report establishes a general framework that can easily be extended to other brachytherapy MBDCAs and brachytherapy sources. The AAPM, ESTRO, ABG, and ABS recommend that clinical medical physicists implement the workflow presented in this report to validate both the basic and the advanced dose calculation features of their commercial MBDCAs. Recommendations are also given to vendors to integrate advanced analysis tools into their brachytherapy treatment planning system to facilitate extensive dose comparisons. The use of the test cases for research and educational purposes is further encouraged.

Place, publisher, year, edition, pages
WILEY , 2023. Vol. 50, no 8, p. e946-e960
Keywords [en]
brachytherapy; commissioning; dose calculation; model-based dose calculation; Monte Carlo; TG-186
National Category
Radiology, Nuclear Medicine and Medical Imaging
Identifiers
URN: urn:nbn:se:liu:diva-196678DOI: 10.1002/mp.16571ISI: 001026540300001PubMedID: 37427750OAI: oai:DiVA.org:liu-196678DiVA, id: diva2:1789257
Note

Funding Agencies|Natural Sciences and Engineering Research Council of Canada (NSERC; FEDER/MCIyU-AEI; Generalitat Valanciana [PGC2018-101302-B, PID2021-125096NB-I00]; NCI [PROMOTEO/2021/064]; Swedish Cancer Foundation [5P30CA056036-17, 5U24CA180803]; [CAN/2017/1029]; [21 1788 Pj]

Available from: 2023-08-18 Created: 2023-08-18 Last updated: 2024-03-25

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