{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,2,21]],"date-time":"2025-02-21T14:33:29Z","timestamp":1740148409911,"version":"3.37.3"},"reference-count":15,"publisher":"Springer Science and Business Media LLC","issue":"2","license":[{"start":{"date-parts":[[2024,3,11]],"date-time":"2024-03-11T00:00:00Z","timestamp":1710115200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"},{"start":{"date-parts":[[2024,3,11]],"date-time":"2024-03-11T00:00:00Z","timestamp":1710115200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"}],"funder":[{"name":"JSPS KAKENHI","award":["21K07742"],"award-info":[{"award-number":["21K07742"]}]},{"DOI":"10.13039\/501100004721","name":"The University of Tokyo","doi-asserted-by":"crossref","id":[{"id":"10.13039\/501100004721","id-type":"DOI","asserted-by":"crossref"}]}],"content-domain":{"domain":["link.springer.com"],"crossmark-restriction":false},"short-container-title":["Radiol Phys Technol"],"published-print":{"date-parts":[[2024,6]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>To investigate the geometric accuracy of the radiation focal point (RFP) and cone-beam computed tomography (CBCT) over long-term periods for the ICON Leksell Gamma Knife radiosurgery system. This phantom study utilized the ICON quality assurance tool plus, and the phantom was manually set on the patient position system before the implementation of treatment for patients. The deviation of the RFP position from the unit center point (UCP) and the positions of the four ball bearings (BBs) in the CBCT from the reference position were automatically analyzed. During 544\u00a0days, a total of 269 analyses were performed on different days. The mean\u2009\u00b1\u2009standard deviation (SD) of the deviation between measured RFP and UCP was 0.01\u2009\u00b1\u20090.03, 0.01\u2009\u00b1\u20090.03, and \u22120.01\u2009\u00b1\u20090.01\u00a0mm in the <jats:italic>X<\/jats:italic>, <jats:italic>Y<\/jats:italic>, and <jats:italic>Z<\/jats:italic> directions, respectively. The deviations with offset values after the cobalt-60 source replacement (0.00\u2009\u00b1\u20090.03, \u22120.01\u2009\u00b1\u20090.01, and \u22120.01\u2009\u00b1\u20090.01\u00a0mm in the <jats:italic>X<\/jats:italic>, <jats:italic>Y<\/jats:italic>, and <jats:italic>Z<\/jats:italic> directions, respectively) were significantly (<jats:italic>p<\/jats:italic>\u2009=\u20090.001) smaller than those before the replacement (0.02\u2009\u00b1\u20090.03, 0.02\u2009\u00b1\u20090.01, and \u22120.02\u2009\u00b1\u20090.01\u00a0mm in the <jats:italic>X<\/jats:italic>, <jats:italic>Y<\/jats:italic>, and <jats:italic>Z<\/jats:italic> directions, respectively). The overall mean\u2009\u00b1\u2009SD of four BBs was \u22120.03\u2009\u00b1\u20090.03, \u22120.01\u2009\u00b1\u20090.05, and 0.01\u2009\u00b1\u20090.03\u00a0mm in the <jats:italic>X<\/jats:italic>, <jats:italic>Y<\/jats:italic>, and <jats:italic>Z<\/jats:italic> directions, respectively. Geometric positional accuracy was ensured to be within 0.1\u00a0mm on most days over a long-term period of more than 500\u00a0days.<\/jats:p>","DOI":"10.1007\/s12194-024-00788-9","type":"journal-article","created":{"date-parts":[[2024,3,11]],"date-time":"2024-03-11T10:01:51Z","timestamp":1710151311000},"page":"389-395","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Long-term geometric quality assurance of radiation focal point and cone-beam computed tomography for Gamma Knife radiosurgery system"],"prefix":"10.1007","volume":"17","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-6170-1471","authenticated-orcid":false,"given":"Shingo","family":"Ohira","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Toshikazu","family":"Imae","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Masanari","family":"Minamitani","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Atsuto","family":"Katano","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Atsushi","family":"Aoki","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Takeshi","family":"Ohta","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Motoyuki","family":"Umekawa","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yuki","family":"Shinya","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hirotaka","family":"Hasegawa","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Teiji","family":"Nishio","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Masahiko","family":"Koizumi","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hideomi","family":"Yamashita","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Nobuhito","family":"Saito","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Keiichi","family":"Nakagawa","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"297","published-online":{"date-parts":[[2024,3,11]]},"reference":[{"issue":"2","key":"788_CR1","doi-asserted-by":"publisher","first-page":"325","DOI":"10.3171\/JNS-07\/08\/0325","volume":"107","author":"A Kollova","year":"2007","unstructured":"Kollova A, Liscak R, Novotny J Jr, et al. Gamma Knife surgery for benign meningioma. J Neurosurg. 2007;107(2):325\u201336.","journal-title":"J Neurosurg"},{"key":"788_CR2","doi-asserted-by":"publisher","first-page":"729","DOI":"10.1007\/s11060-023-04452-x","volume":"164","author":"AS Kuan","year":"2023","unstructured":"Kuan AS, Chiang CL, Wu HM, et al. Improved survival and intracranial tumor control of EGFR-mutated NSCLC patients with newly developed brain metastases following stereotactic radiosurgery and EGFR-TKI: a large retrospective cohort study and meta-analyses. J Neurooncol. 2023;164:729.","journal-title":"J Neurooncol"},{"issue":"3","key":"788_CR3","doi-asserted-by":"publisher","first-page":"423","DOI":"10.1007\/s11060-022-04029-0","volume":"158","author":"AN Maldar","year":"2022","unstructured":"Maldar AN, Pattankar S, Misra BK, et al. Long-term hormonal and imaging outcomes of adjunctive gamma knife radiosurgery in non-functioning pituitary adenomas: a single center experience. J Neurooncol. 2022;158(3):423\u201333.","journal-title":"J Neurooncol"},{"issue":"8","key":"788_CR4","doi-asserted-by":"publisher","first-page":"1974","DOI":"10.1161\/STROKEAHA.123.042515","volume":"54","author":"G Mantziaris","year":"2023","unstructured":"Mantziaris G, Pikis S, Dumot C, et al. Outcome evaluation of repeat stereotactic radiosurgery for cerebral arteriovenous malformations. Stroke. 2023;54(8):1974\u201384.","journal-title":"Stroke"},{"key":"788_CR5","doi-asserted-by":"publisher","DOI":"10.3171\/2023.6.JNS23834","author":"Y Samanci","year":"2023","unstructured":"Samanci Y, Yoruk Oner SS, Peker S. Alexithymia and depression may predict treatment failure in patients undergoing Gamma Knife radiosurgery for trigeminal neuralgia: the potential contribution of colored pain drawings. J Neurosurg. 2023. https:\/\/doi.org\/10.3171\/2023.6.JNS23834.","journal-title":"J Neurosurg"},{"issue":"7","key":"788_CR6","doi-asserted-by":"publisher","first-page":"e733","DOI":"10.1002\/mp.14831","volume":"48","author":"PL Petti","year":"2021","unstructured":"Petti PL, Rivard MJ, Alvarez PE, et al. Recommendations on the practice of calibration, dosimetry, and quality assurance for gamma stereotactic radiosurgery: Report of AAPM Task Group 178. Med Phys. 2021;48(7):e733\u201370.","journal-title":"Med Phys"},{"issue":"Suppl1","key":"788_CR7","doi-asserted-by":"publisher","first-page":"133","DOI":"10.3171\/2018.7.GKS181516","volume":"129","author":"A Carminucci","year":"2018","unstructured":"Carminucci A, Nie K, Weiner J, et al. Assessment of motion error for frame-based and noninvasive mask-based fixation using the Leksell Gamma Knife Icon radiosurgery system. J Neurosurg. 2018;129(Suppl1):133\u20139.","journal-title":"J Neurosurg"},{"issue":"6","key":"788_CR8","doi-asserted-by":"publisher","first-page":"1015","DOI":"10.1007\/s10147-018-1313-4","volume":"23","author":"K Harada","year":"2018","unstructured":"Harada K, Igaki H, Abe E, et al. Present clinical practices of stereotactic irradiation for metastatic brain tumors in Japan: results of questionnaire survey of the Japanese Radiation Oncology Study Group (JROSG) working subgroup for neurological tumors. Int J Clin Oncol. 2018;23(6):1015\u201322.","journal-title":"Int J Clin Oncol"},{"issue":"5","key":"788_CR9","doi-asserted-by":"publisher","DOI":"10.1002\/acm2.13564","volume":"23","author":"WN Duggar","year":"2022","unstructured":"Duggar WN, Morris B, He R, et al. Total workflow uncertainty of frameless radiosurgery with the Gamma Knife Icon cone-beam computed tomography. J Appl Clin Med Phys. 2022;23(5): e13564.","journal-title":"J Appl Clin Med Phys"},{"key":"788_CR10","unstructured":"Elekta AB. Geometric quality assurance for Leksell Gamma Knife\u00ae Icon\u2122. White Paper. 2015; No. 1518416.01."},{"issue":"1","key":"788_CR11","doi-asserted-by":"publisher","first-page":"168","DOI":"10.1227\/01.NEU.0000126880.33125.E6","volume":"55","author":"JS Kuo","year":"2004","unstructured":"Kuo JS, Yu C, Giannotta SL, et al. The Leksell gamma knife Model U versus Model C: a quantitative comparison of radiosurgical treatment parameters. Neurosurgery. 2004;55(1):168\u201372.","journal-title":"Neurosurgery"},{"issue":"3","key":"788_CR12","doi-asserted-by":"publisher","DOI":"10.1118\/1.4866225","volume":"41","author":"J Novotny Jr","year":"2014","unstructured":"Novotny J Jr, Bhatnagar JP, Xu Y, et al. Long-term stability of the Leksell Gamma Knife(R) Perfexion patient positioning system (PPS). Med Phys. 2014;41(3): 031711.","journal-title":"Med Phys"},{"issue":"5","key":"788_CR13","doi-asserted-by":"publisher","first-page":"1465","DOI":"10.1016\/0360-3016(95)00577-L","volume":"32","author":"AH Maitz","year":"1995","unstructured":"Maitz AH, Wu A, Lunsford LD, et al. Quality assurance for gamma knife stereotactic radiosurgery. Int J Radiat Oncol Biol Phys. 1995;32(5):1465\u201371.","journal-title":"Int J Radiat Oncol Biol Phys"},{"issue":"1","key":"788_CR14","doi-asserted-by":"publisher","first-page":"59","DOI":"10.1002\/acm2.13070","volume":"22","author":"B Maraghechi","year":"2021","unstructured":"Maraghechi B, Kim T, Mitchell TJ, et al. Filmless quality assurance of a Leksell Gamma Knife(R) Icon. J Appl Clin Med Phys. 2021;22(1):59\u201367.","journal-title":"J Appl Clin Med Phys"},{"issue":"5","key":"788_CR15","doi-asserted-by":"publisher","first-page":"573","DOI":"10.1002\/acm2.12417","volume":"19","author":"I AlDahlawi","year":"2018","unstructured":"AlDahlawi I, Prasad D, Podgorsak MB. Quality assurance tests for the Gamma Knife((R)) Icon image guidance system. J Appl Clin Med Phys. 2018;19(5):573\u20139.","journal-title":"J Appl Clin Med Phys"}],"container-title":["Radiological Physics and Technology"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/link.springer.com\/content\/pdf\/10.1007\/s12194-024-00788-9.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/link.springer.com\/article\/10.1007\/s12194-024-00788-9\/fulltext.html","content-type":"text\/html","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/link.springer.com\/content\/pdf\/10.1007\/s12194-024-00788-9.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2024,5,26]],"date-time":"2024-05-26T07:02:08Z","timestamp":1716706928000},"score":1,"resource":{"primary":{"URL":"https:\/\/link.springer.com\/10.1007\/s12194-024-00788-9"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2024,3,11]]},"references-count":15,"journal-issue":{"issue":"2","published-print":{"date-parts":[[2024,6]]}},"alternative-id":["788"],"URL":"https:\/\/doi.org\/10.1007\/s12194-024-00788-9","relation":{},"ISSN":["1865-0333","1865-0341"],"issn-type":[{"type":"print","value":"1865-0333"},{"type":"electronic","value":"1865-0341"}],"subject":[],"published":{"date-parts":[[2024,3,11]]},"assertion":[{"value":"16 October 2023","order":1,"name":"received","label":"Received","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"23 January 2024","order":2,"name":"revised","label":"Revised","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"1 February 2024","order":3,"name":"accepted","label":"Accepted","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"11 March 2024","order":4,"name":"first_online","label":"First Online","group":{"name":"ArticleHistory","label":"Article History"}},{"order":1,"name":"Ethics","group":{"name":"EthicsHeading","label":"Declarations"}},{"value":"Shingo Ohira, Masanari Minamitani, and Keiichi Nakagawa belong to an endowment department, supported with an unrestricted grant from Elekta AB. However, the sponsor had no role in this study.","order":2,"name":"Ethics","group":{"name":"EthicsHeading","label":"Conflicts of interest"}},{"value":"Ethical approval was not required because our design only involved the use of phantoms.","order":3,"name":"Ethics","group":{"name":"EthicsHeading","label":"Ethical approval"}},{"value":"Informed consent was not required because our design only involved the use of phantoms.","order":4,"name":"Ethics","group":{"name":"EthicsHeading","label":"Informed consent"}}]}}