{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,27]],"date-time":"2026-08-27T03:04:45Z","timestamp":1787799885591,"version":"build-2784847793"},"reference-count":32,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2024,11,26]],"date-time":"2024-11-26T00:00:00Z","timestamp":1732579200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["aapm.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["J Applied Clin Med Phys"],"published-print":{"date-parts":[[2025,1]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Purpose<\/jats:title><jats:p>Radiotherapy devices with multiple image\u2010guidance systems, such as surface\u2010guided radiation therapy (SGRT), have been widely used in recent years. However, in the case of SGRT devices using the light\u2010section method, coordinate coincidence evaluation using a phantom for SGRT devices with patterned light projection is not appropriate. Hence, this study aims to develop a dedicated phantom able to evaluate both the detection accuracy and coordinate coincidence of multiple IGRT configurations, including light\u2010section\u2010based SGRT devices.<\/jats:p><\/jats:sec><jats:sec><jats:title>Materials and method<\/jats:title><jats:p>First, we developed an end\u2010to\u2010end (E2E) phantom that can be scanned by CT and detected by a light\u2010section\u2010method\u2010based SGRT device. Second, the detection accuracy of the phantom under three reference data acquisition conditions was evaluated using the E2E phantom. The three conditions were a body surface image detected by VOXELAN in the simulation CT room, a body surface image reconstructed from the volume data of the simulation CT room, and a body surface image acquired by VOXELAN in the radiotherapy room. Finally, the coordinate coincidence of the image\u2010guidance system was evaluated using the E2E phantom.<\/jats:p><\/jats:sec><jats:sec><jats:title>Result<\/jats:title><jats:p>Upon comparing detection accuracy among the three reference data acquisition methods, we found that the reference data generated in the CT room had the largest error (0.58\u00a0mm at maximum). The coordinate coincidences of the multiple image\u2010guidance systems were within 1\u00a0mm for all components after the maintenance of VOXELAN using E2E phantom. Furthermore, the long\u2010term direction stability was worse in the longitudinal direction.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>The new E2E phantom can be used to evaluate the detection accuracy of a light\u2010section\u2010based SGRT system and the coordinate coincidence using a Winston\u2013Lutz\u2010based method in multiple image\u2010guided configurations. The detection accuracy in the three different reference images of VOXELAN using this phantom improved to within 1\u00a0mm in all directions.<\/jats:p><\/jats:sec>","DOI":"10.1002\/acm2.14517","type":"journal-article","created":{"date-parts":[[2024,11,27]],"date-time":"2024-11-27T06:40:09Z","timestamp":1732689609000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["Development of dedicated phantom for end\u2010to\u2010end testing of multiple image\u2010guidance configurations incorporating light\u2010section\u2010based surface guidance system"],"prefix":"10.1002","volume":"26","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-1720-3651","authenticated-orcid":false,"given":"Naoki","family":"Hayashi","sequence":"first","affiliation":[{"name":"Division of Medical Physics School of Medical Sciences Fujita Health University  Toyoake Aichi 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