{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,2]],"date-time":"2026-06-02T11:39:45Z","timestamp":1780400385908,"version":"3.54.1"},"reference-count":20,"publisher":"Wiley","issue":"3","license":[{"start":{"date-parts":[[2022,1,25]],"date-time":"2022-01-25T00:00:00Z","timestamp":1643068800000},"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":[[2022,3]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>The Catalyst\u2122 HD (C\u2010RAD Positioning AB, Uppsala, Sweden) is surface\u2010guided radiotherapy (SGRT) equipment that adopts a deformable model. The challenge in applying the SGRT system is accurately correcting the setup error using a deformable model when the body of the patient is deformed. This study evaluated the effect of breast deformation on the accuracy of the setup correction of the SGRT system. Physical breast phantoms were used to investigate the relationship between the mean deviation setup error obtained from the SGRT system and the breast deformation. Physical breast phantoms were used to simulate extension and shrinkage deformation (\u221230 to 30\u00a0mm) by changing breast pieces. Three\u2010dimensional (3D) Slicer software was used to evaluate the deformation. The maximum deformations in <jats:italic>X<\/jats:italic>, <jats:italic>Y<\/jats:italic>, and <jats:italic>Z<\/jats:italic> directions were obtained as the differences between the original and deformed breasts. We collected the mean deviation setup error from the SGRT system by replacing the original breast part with the deformed breast part. The mean absolute difference of lateral, longitudinal, vertical, pitch, roll, and yaw, between the rigid and deformable registrations was 2.4\u00a0\u00b1\u00a01.7\u00a0mm, 1.3\u00a0\u00b1\u00a01.2\u00a0mm, 6.4\u00a0\u00b1\u00a05.2\u00a0mm, 2.5\u00b0\u00a0\u00b1\u00a02.5\u00b0, 2.2\u00b0\u00a0\u00b1\u00a02.4\u00b0, and 1.0\u00b0\u00a0\u00b1\u00a01.0\u00b0, respectively. Deformation in the <jats:italic>Y<\/jats:italic> direction had the best correlation with the mean deviation translation error (<jats:italic>R<\/jats:italic>\u00a0=\u00a00.949) and rotation error (<jats:italic>R<\/jats:italic>\u00a0=\u00a00.832). As the magnitude of breast deformation increased, both mean deviation setup errors increased, and there was greater error in translation than in rotation. Large deformation of the breast surface affects the setup correction. Deformation in the <jats:italic>Y<\/jats:italic> direction most affects translation and rotation errors.<\/jats:p>","DOI":"10.1002\/acm2.13493","type":"journal-article","created":{"date-parts":[[2022,1,25]],"date-time":"2022-01-25T17:07:02Z","timestamp":1643130422000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":12,"title":["Accuracy of patient setup positioning using surface\u2010guided radiotherapy with deformable registration in cases of surface deformation"],"prefix":"10.1002","volume":"23","author":[{"given":"Boriphat","family":"Kadman","sequence":"first","affiliation":[{"name":"Division of Health Sciences Graduate School of Medical Sciences, Pharmaceutical and Health Sciences Kanazawa University  5\u201011\u201080 Kodatsuno Kanazawa Ishikawa 9200942 Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Akihiro","family":"Takemura","sequence":"additional","affiliation":[{"name":"Faculty of Health Sciences Institute of Medical, Pharmaceutical and Health Sciences Kanazawa University  5\u201011\u201080 Kodatsuno Kanazawa Ishikawa 9200942 Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tatsuya","family":"Ito","sequence":"additional","affiliation":[{"name":"Department of Radiological Technology Japanese Red Cross Aichi Medical Center Nagoya Daini Hospital  2\u20109 Myouke\u2010cho, Showa\u2010ku Nagoya Aichi 4668650 Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Naoki","family":"Okada","sequence":"additional","affiliation":[{"name":"Division of Health Sciences Graduate School of Medical Sciences, Pharmaceutical and Health Sciences Kanazawa University  5\u201011\u201080 Kodatsuno Kanazawa Ishikawa 9200942 Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hironori","family":"Kojima","sequence":"additional","affiliation":[{"name":"Department of Radiology Kanazawa University Hospital  13\u20101 Takara\u2010machi Kanazawa Ishikawa 9208641 Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shinichi","family":"Ueda","sequence":"additional","affiliation":[{"name":"Department of Radiology Kanazawa University Hospital  13\u20101 Takara\u2010machi Kanazawa Ishikawa 9208641 Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2022,1,25]]},"reference":[{"key":"e_1_2_9_2_1","article-title":"Image guidance in radiation therapy: techniques and applications","volume":"2014","author":"Goyal S","year":"2014","journal-title":"Radiol Res Prac"},{"key":"e_1_2_9_3_1","doi-asserted-by":"publisher","DOI":"10.4103\/2278-330X.96502"},{"key":"e_1_2_9_4_1","doi-asserted-by":"publisher","DOI":"10.1186\/s13014-016-0728-1"},{"key":"e_1_2_9_5_1","doi-asserted-by":"publisher","DOI":"10.1177\/1533033818806002"},{"key":"e_1_2_9_6_1","doi-asserted-by":"publisher","DOI":"10.1155\/2017\/2938504"},{"key":"e_1_2_9_7_1","first-page":"1421","volume-title":"Global correspondence optimization for non\u2010rigid registration of depth scans","author":"Li H","year":"2008"},{"key":"e_1_2_9_8_1","unstructured":"NuttiB Kronander\u00c5 NilsingM MaadK SvenssonC&LiHDepth sensor\u2010based realtime tumor tracking for accurate radiation therapy. 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