Academic Journal
Log file-based patient-specific quality assurance for MR-guided radiation therapy with comprehensive motion management.
| Τίτλος: | Log file-based patient-specific quality assurance for MR-guided radiation therapy with comprehensive motion management. |
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| Συγγραφείς: | Yuan K; Medical Physics Division, CUHK Medical Centre, Hong Kong, Hong Kong SAR, China., Cheung MM; Medical Physics Division, CUHK Medical Centre, Hong Kong, Hong Kong SAR, China., Lee L; Medical Physics Division, CUHK Medical Centre, Hong Kong, Hong Kong SAR, China.; Department of Clinical Oncology, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, Hong Kong SAR, China. |
| Πηγή: | Journal of applied clinical medical physics [J Appl Clin Med Phys] 2026 Sep; Vol. 27 (9), pp. e70773. |
| Τύπος έκδοσης: | Journal Article |
| Γλώσσα: | English |
| Στοιχεία περιοδικού: | Publisher: Wiley on behalf of American Association of Physicists in Medicine Country of Publication: United States NLM ID: 101089176 Publication Model: Print Cited Medium: Internet ISSN: 1526-9914 (Electronic) Linking ISSN: 15269914 NLM ISO Abbreviation: J Appl Clin Med Phys Subsets: MEDLINE |
| Imprint Name(s): | Publication: 2017- : Malden, MA : Wiley on behalf of American Association of Physicists in Medicine Original Publication: Reston, VA : American College of Medical Physics, c2000- |
| Ιατρικοί όροι (MeSH): | Quality Assurance, Health Care*/standards , Radiotherapy Planning, Computer-Assisted*/methods , Radiotherapy Planning, Computer-Assisted*/standards , Radiotherapy, Image-Guided*/methods , Radiotherapy, Image-Guided*/standards , Particle Accelerators*/instrumentation , Magnetic Resonance Imaging*/methods , Image Processing, Computer-Assisted*/methods , Neoplasms*/radiotherapy, Radiotherapy, Intensity-Modulated/methods ; Humans ; Radiotherapy Dosage ; Movement |
| Περίληψη: | Background: Patient-Specific Quality Assurance (PSQA) for Elekta Unity MR-Linac treatments delivered under Comprehensive Motion Management (CMM) is challenging because beam gating, unexpected interruptions, and split sub-segments introduce delivery complexities that are not fully addressed by conventional quality assurance workflows. Purpose: This study aimed to develop and evaluate a log file-based PSQA program for Elekta Unity MR-Linac treatments delivered under CMM. Methods: Log files were parsed to extract Multileaf Collimator (MLC) positions, jaw positions, and Monitor Units (MU) for each segment, with dedicated handling of CMM-induced beam gating, unexpected beam interruptions, and split sub-segments. Gantry-resolved fluence maps reconstructed from the log files were compared with planned fluence maps using gamma analysis. The system was evaluated for 66 cases, including 3 completion plans and 2 baseline shift plans. Results: Among the 66 plans, 64 achieved passing gamma results, with a pooled average passing rate of 99.91 ± 0.21%. Conclusions: The proposed log file-based PSQA framework demonstrates accuracy and clinical practicality for MR-Linac treatments in CMM mode. It may serve as a reliable post-treatment verification tool and reduce dependence on conventional phantom-based QA. (© 2026 The Author(s). Journal of Applied Clinical Medical Physics published by Wiley Periodicals, LLC on behalf of The American Association of Physicists in Medicine.) |
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| Contributed Indexing: | Keywords: MR‐Linac; comprehensive motion management; log file; patient‐specific quality assurance; radiation therapy |
| Entry Date(s): | Date Created: 20260825 Date Completed: 20260825 Latest Revision: 20260917 |
| Update Code: | 20260918 |
| PubMed Central ID: | PMC13504375 |
| DOI: | 10.1002/acm2.70773 |
| PMID: | 42638481 |
| Βάση Δεδομένων: | MEDLINE |
| ISSN: | 1526-9914 |
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| DOI: | 10.1002/acm2.70773 |