{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,24]],"date-time":"2026-09-24T00:09:25Z","timestamp":1790208565387,"version":"4.1.0"},"reference-count":40,"publisher":"Wiley","issue":"3","license":[{"start":{"date-parts":[[2026,2,24]],"date-time":"2026-02-24T00:00:00Z","timestamp":1771891200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2026,2,24]],"date-time":"2026-02-24T00:00:00Z","timestamp":1771891200000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"content-domain":{"domain":["aapm.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["J Applied Clin Med Phys"],"published-print":{"date-parts":[[2026,3]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Background<\/jats:title>\n                    <jats:p>The current interest in utilizing log file\u2010based patient\u2010specific quality assurance (PSQA) is growing as an alternative to measurement\u2010based approaches for volumetric modulated arc therapy (VMAT) plans. However, implementing log file\u2010based PSQA requires further experience and understanding since there are no guidelines.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Purpose<\/jats:title>\n                    <jats:p>This study aimed to evaluate the feasibility of implementing commercial log file\u2010based PSQA (MobiusFX) for pretreatment verification of VMAT plans by comparing its outcomes with measurement\u2010based methods.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>The study was conducted by selecting 40 VMAT plans and these plans were performed for pretreatment verification for both MobiusFX and measurement\u2010based methods, including portal dosimetry, ArcCHECK, and Octavius4D with gamma analysis at criteria 3%\/3\u00a0mm, 3%\/2\u00a0mm, and 2%\/2\u00a0mm. The agreement of gamma passing rate between MobiusFX and measurement\u2010based methods was assessed through scatter plots and percentage agreement score. Additionally, the root mean square (RMS) errors obtained from MobiusFX were investigated in each machine parameter, and examined the correlation between the gamma passing rate and plan complexity metric (MU\/Gy) by Spearman's rank correlation coefficient. The statistical control process concept from TG 218 was also applied to establish the action limit (AL) and tolerance limit (TL) for MobiusFX.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>The scatter plots of MobiusFX illustrated a trend similar to the measurement\u2010based methods, with high percentage agreement scores observed at 3%\/3\u00a0mm and 3%\/2\u00a0mm criteria. RMS errors were zero for all parameters except multileaf collimator (MLC), and the maximum RMS was 0.06\u00a0mm. No correlation was found between the gamma passing rate and the complexity metric in this study. The most appropriate TL and AL for the gamma passing rate with MobiusFX were determined to be 95.38% and 94.75%, respectively, at the 3%\/2\u00a0mm criterion.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>MobiusFX showed interchangeable gamma passing rates with measurement\u2010based methods at the 3%\/3\u00a0mm and 3%\/2\u00a0mm criteria, supporting its use as an alternative for VMAT pretreatment verification. Machine\u2010 and system\u2010specific factors should be considered for reliable clinical implementation.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1002\/acm2.70526","type":"journal-article","created":{"date-parts":[[2026,3,8]],"date-time":"2026-03-08T16:18:54Z","timestamp":1772986734000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Implementing log file\u2010based patient\u2010specific QA for VMAT plans: A comparative study of MobiusFX and measurement\u2010based approaches"],"prefix":"10.1002","volume":"27","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-0144-3789","authenticated-orcid":false,"given":"Thitipong","family":"Sawapabmongkon","sequence":"first","affiliation":[{"name":"Division of Radiation Oncology Department of Diagnostic and Therapeutic Radiology Faculty of Medicine Ramathibodi Hospital Mahidol University  Bangkok Thailand"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Pimolpun","family":"Changkaew","sequence":"additional","affiliation":[{"name":"Division of Radiation Oncology Department of Diagnostic and Therapeutic Radiology Faculty of Medicine Ramathibodi Hospital Mahidol University  Bangkok Thailand"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chanon","family":"Puttanawarut","sequence":"additional","affiliation":[{"name":"Chakri Naruebodindra Medical Institute Faculty of Medicine Ramathibodi Hospital Mahidol University  Samut Prakan Thailand"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Puangpen","family":"Tangboonduangjit","sequence":"additional","affiliation":[{"name":"Division of Radiation Oncology Department of Diagnostic and Therapeutic Radiology Faculty of Medicine Ramathibodi Hospital Mahidol University  Bangkok Thailand"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4771-7941","authenticated-orcid":false,"given":"Suphalak","family":"Khachonkham","sequence":"additional","affiliation":[{"name":"Division of Radiation Oncology Department of Diagnostic and Therapeutic Radiology Faculty of Medicine Ramathibodi Hospital Mahidol University  Bangkok Thailand"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2026,2,24]]},"reference":[{"key":"e_1_2_11_2_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.compmedimag.2016.10.001"},{"key":"e_1_2_11_3_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.radonc.2009.08.011"},{"key":"e_1_2_11_4_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ijrobp.2011.09.015"},{"key":"e_1_2_11_5_1","unstructured":"BogdanichW Radiation offers new cures and ways to do harm. 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