{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,5,12]],"date-time":"2025-05-12T16:32:54Z","timestamp":1747067574408,"version":"3.37.3"},"reference-count":23,"publisher":"Oxford University Press (OUP)","issue":"1","license":[{"start":{"date-parts":[[2022,11,1]],"date-time":"2022-11-01T00:00:00Z","timestamp":1667260800000},"content-version":"vor","delay-in-days":1,"URL":"https:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001700","name":"Ministry of Education, Culture, Sports, Science and Technology","doi-asserted-by":"publisher","award":["18K15613"],"award-info":[{"award-number":["18K15613"]}],"id":[{"id":"10.13039\/501100001700","id-type":"DOI","asserted-by":"publisher"}]},{"name":"National Cancer Center Research and Development Fund","award":["2022-A-18"],"award-info":[{"award-number":["2022-A-18"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2023,1,20]]},"abstract":"<jats:title>Abstract<\/jats:title>\n               <jats:p>This study aimed to clarify the differences in radiotherapy dose characteristics and delivery efficiency between the supine and prone positions in patients with prostate cancer using the CyberKnife. The planning computed tomography (CT) and delineations of the prone position were obtained by rotating the supine CT images with delineations of 180\u00b0 using image processing software. The optimization parameters for planning target volume (PTV) and organs at risk (OARs) were based on the prone position. The optimization parameters determined for the prone position were applied to the supine position for optimization and dose calculation. The dosimetric characteristics of the PTV and OARs, and delivery efficiency were compared between the two different patient positions. The plans in the prone position resulted in better PTV conformity index (nCI), rectum V90%, V80%, V75%, V50% and bladder V50%. A significant difference was observed in treatment time and depth along the central axis (dCAX) between the two plans. The mean treatment time per fraction and dCAX for the supine and prone positions were 20.9\u2009\u00b1\u20091.7\u00a0min versus 19.8\u2009\u00b1\u20091.3\u00a0min (P\u2009=\u20090.019) and 151.1\u2009\u00b1\u200933.6\u00a0mm versus 233.2\u2009\u00b1\u20098.8\u00a0mm (P\u2009&amp;lt;\u20090.001), respectively. In this study the prone position was found to improve dosimetric characteristics and delivery efficiency compared with the supine position during prostate cancer treatment with the CyberKnife.<\/jats:p>","DOI":"10.1093\/jrr\/rrac065","type":"journal-article","created":{"date-parts":[[2022,11,1]],"date-time":"2022-11-01T05:11:03Z","timestamp":1667279463000},"page":"186-194","source":"Crossref","is-referenced-by-count":1,"title":["Planning study: prone versus supine position for stereotactic body radiotherapy in prostate by CyberKnife"],"prefix":"10.1093","volume":"64","author":[{"given":"Mitsuhiro","family":"Kon","sequence":"first","affiliation":[{"name":"Radiation Safety and Quality Assurance Division, National Cancer Center Hospital , 5-1-1 Tsukiji, Chuo-ku Tokyo, 104-0045 , Japan"},{"name":"Department of Radiological Technology, National Cancer Center Hospital , 5-1-1 Tsukiji, Chuo-ku Tokyo, 104-0045 , 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Division, National Cancer Center Hospital , 5-1-1 Tsukiji, Chuo-ku Tokyo, 104-0045 , Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Mihiro","family":"Takemori","sequence":"additional","affiliation":[{"name":"Radiation Safety and Quality Assurance Division, National Cancer Center Hospital , 5-1-1 Tsukiji, Chuo-ku Tokyo, 104-0045 , Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hiroki","family":"Nakayama","sequence":"additional","affiliation":[{"name":"Radiation Safety and Quality Assurance Division, National Cancer Center Hospital , 5-1-1 Tsukiji, Chuo-ku Tokyo, 104-0045 , Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Tetsu","family":"Nakaichi","sequence":"additional","affiliation":[{"name":"Radiation Safety and Quality Assurance Division, National Cancer Center Hospital , 5-1-1 Tsukiji, Chuo-ku Tokyo, 104-0045 , 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, North12, West5, Kita-ku, Sapporo, Hokkaido 060-0812 , Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Toshimitsu","family":"Sofue","sequence":"additional","affiliation":[{"name":"Department of Radiological Technology, National Cancer Center Hospital , 5-1-1 Tsukiji, Chuo-ku Tokyo, 104-0045 , Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Shoichi","family":"Katsuta","sequence":"additional","affiliation":[{"name":"Department of Radiological Technology, National Cancer Center Hospital , 5-1-1 Tsukiji, Chuo-ku Tokyo, 104-0045 , Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Koji","family":"Inaba","sequence":"additional","affiliation":[{"name":"Department of Radiation Oncology, National Cancer Center Hospital , 5-1-1 Tsukiji, Chuo-ku Tokyo, 104-0045 , Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hiroshi","family":"Igaki","sequence":"additional","affiliation":[{"name":"Department of Radiation 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