{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,25]],"date-time":"2026-09-25T06:27:48Z","timestamp":1790317668994,"version":"4.1.0"},"reference-count":23,"publisher":"Wiley","issue":"4","license":[{"start":{"date-parts":[[2025,1,10]],"date-time":"2025-01-10T00:00:00Z","timestamp":1736467200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"}],"content-domain":{"domain":["aapm.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Medical Physics"],"published-print":{"date-parts":[[2025,4]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Background<\/jats:title><jats:p>All\u2010in\u2010one radiotherapy workflow (AIO) is a novel one\u2010stop solution that integrates the multiple conventional radiotherapy steps from simulation, contouring, planning, image guidance, beam delivery, and in vivo dosimetry into a single device (integrated computed tomography linac, the uRT\u2010linac 506c), making the treatment process more efficient and convenient while reducing errors for cancer patients' initial radiotherapy. Despite its numerous advantages, the implementation of AIO faces challenges such as interdisciplinary coordination, software and hardware complexity, and reliance on artificial intelligence. To ensure its safety and effectiveness, it is necessary to conduct a risk assessment and identify appropriate quality management measures.<\/jats:p><\/jats:sec><jats:sec><jats:title>Purpose<\/jats:title><jats:p>To perform risk assessment on the AIO for nasopharyngeal carcinoma using failure mode and effects analysis (FMEA) and fault tree analysis (FTA), and to validate the effectiveness of the quality management measures.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>A flowchart was established for the AIO of nasopharyngeal carcinoma. FMEA analysis was conducted based on the flowchart, and quantitative assessments of each failure mode (FM) were performed to obtain  (occurrence),  (severity), and  (Detectability). Weighted , , and  were obtained using the similarity aggregation method (SAM), and the final risk priority number (RPN) was calculated by multiplying these values. The FMs were then evaluated into two groups based on whether quality management (QM) measures were implemented, and sorted by the RPN. Finally, FTA analysis was conducted on the highest\u2010risk FMs identified through ranking.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>A flowchart of AIO for nasopharyngeal carcinoma was established, consisting of 5 main steps and 28 sub\u2010steps. After FMEA analysis, 86 FMs were identified. In the group without implementing QM measures (QM\u2010free group), the RPN of FMs ranged from 13.5 to 186.2, with a threshold of 94.6 for the top 20% RPN scores, resulting in 17 high\u2010risk FMs. Additionally, 21 FMs had , with a cumulative total of 25 high\u2010risk FMs after removing duplicates. In the group that implemented QM measures (QM group), the RPN of FMs ranged from 3.0 to 46.7, showing an overall decrease compared to the QM\u2010free group. There was a statistically significant difference in RPN between the QM\u2010free (55.80\u00a0\u00b1\u00a038.40) and QM (16.17\u00a0\u00b1\u00a010.99) groups (<jats:italic>p<\/jats:italic>\u00a0&lt;\u00a00.001), validating the effectiveness of the QM measures. Finally, FTA analysis was performed on the highest\u2010risk step identified in the QM\u2010free group with the highest RPN.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>The improved FMEA and FTA analysis methods are practical and operational, allowing for a comprehensive analysis of potential failures and risks in the AIO for nasopharyngeal carcinoma. They can effectively assist in establishing and evaluating QM standards for AIO of nasopharyngeal carcinoma. Moreover, the analytical methods and QM measures of this study can be effectively applied to AIO for tumors in other sites.<\/jats:p><\/jats:sec>","DOI":"10.1002\/mp.17620","type":"journal-article","created":{"date-parts":[[2025,1,10]],"date-time":"2025-01-10T22:29:14Z","timestamp":1736548154000},"page":"2425-2437","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":7,"title":["Risk assessment and quality management in AIO based on CT\u2010linac for nasopharyngeal carcinoma: An improved FMEA and FTA approach"],"prefix":"10.1002","volume":"52","author":[{"given":"Guangyu","family":"Wang","sequence":"first","affiliation":[{"name":"State Key Laboratory of Oncology in South China Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy Guangdong Provincial Clinical Research Center for Cancer Sun Yat\u2010sen University Cancer Center  Guangzhou P. R. China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shouliang","family":"Ding","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Oncology in South China Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy Guangdong Provincial Clinical Research Center for Cancer Sun Yat\u2010sen University Cancer Center  Guangzhou P. R. China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xin","family":"Yang","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Oncology in South China Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy Guangdong Provincial Clinical Research Center for Cancer Sun Yat\u2010sen University Cancer Center  Guangzhou P. R. China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sijuan","family":"Huang","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Oncology in South China Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy Guangdong Provincial Clinical Research Center for Cancer Sun Yat\u2010sen University Cancer Center  Guangzhou P. R. China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Guanqun","family":"Zhou","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Oncology in South China Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy Guangdong Provincial Clinical Research Center for Cancer Sun Yat\u2010sen University Cancer Center  Guangzhou P. R. 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R. China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ying","family":"Sun","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Oncology in South China Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy Guangdong Provincial Clinical Research Center for Cancer Sun Yat\u2010sen University Cancer Center  Guangzhou P. R. 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