{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2023,9,18]],"date-time":"2023-09-18T09:11:55Z","timestamp":1695028315404},"reference-count":12,"publisher":"Wiley","issue":"3","license":[{"start":{"date-parts":[[2010,2,18]],"date-time":"2010-02-18T00:00:00Z","timestamp":1266451200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"DOI":"10.13039\/501100004084","name":"Korea Science and Engineering Foundation","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100004084","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100004085","name":"Ministry of Education, Science and Technology","doi-asserted-by":"publisher","award":["M20706000007\u201007M0600\u201000710"],"award-info":[{"award-number":["M20706000007\u201007M0600\u201000710"]}],"id":[{"id":"10.13039\/501100004085","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Medical Physics"],"published-print":{"date-parts":[[2010,3]]},"abstract":"<jats:p><jats:bold>Purpose:<\/jats:bold> To overcome the problem of organ motion in intensity\u2010modulated radiation therapy (IMRT), gated IMRT is often used for the treatment of lung cancer. In this study, the authors investigated the accuracy of the delivered monitor units (MUs) from each segment during gated IMRT using a two\u2010dimensional detector array for user\u2010specific verification purpose.<\/jats:p><jats:p><jats:bold>Methods:<\/jats:bold> The authors planned a 6 MV photon, seven\u2010port step\u2010and\u2010shoot lung IMRT delivery. The respiration signals for gated IMRT delivery were obtained from the one\u2010dimensional moving phantom using the real\u2010time position management (RPM) system (Varian Medical Systems, Palo Alto, CA). The beams were delivered using a Clinac iX (Varian Medical Systems, Palo Alto, CA) with the Millennium 120 MLC. The MatriXX (IBA Dosimetry GmbH, Germany) was validated through consistency and reproducibility tests as well as comparison with measurements from a Farmer\u2010type ion chamber. The authors delivered beams with varying dose rates and duty cycles and analyzed the MatriXX data to evaluate MU delivery accuracy.<\/jats:p><jats:p><jats:bold>Results:<\/jats:bold> There was quite good agreement between the planned segment MUs and the MUs computed from the MatriXX within \u00b12% error. The beam\u2010on times computed from the MatriXX data were almost identical for all cases, and they matched well with the RPM beam\u2010on and beam\u2010off signals. A slight difference was observed between them, but it was less than 40 ms. The gated IMRT delivery demonstrated an MU delivery accuracy that was equivalent to ungated IMRT, and the delivered MUs with a gating signal agreed with the planned MUs within \u00b10.5 MU regardless of dose rate and duty cycle.<\/jats:p><jats:p><jats:bold>Conclusions:<\/jats:bold> The authors can conclude that gated IMRT is able to deliver an accurate dose to a patient during a procedure. The authors believe that the methodology and results can be transferred to other vendors\u2019 devices, particularly those that do not provide MLC log data for a verification purpose.<\/jats:p>","DOI":"10.1118\/1.3310806","type":"journal-article","created":{"date-parts":[[2010,3,3]],"date-time":"2010-03-03T17:28:34Z","timestamp":1267637314000},"page":"1146-1151","source":"Crossref","is-referenced-by-count":6,"title":["Evaluation of delivered monitor unit accuracy of gated step\u2010and\u2010shoot IMRT using a two\u2010dimensional detector array"],"prefix":"10.1002","volume":"37","author":[{"given":"Kwang\u2010Ho","family":"Cheong","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sei\u2010Kwon","family":"Kang","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"MeYeon","family":"Lee","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Su SSan","family":"Kim","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"SoAh","family":"Park","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Tae\u2010Jin","family":"Hwang","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kyoung Ju","family":"Kim","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Do Hoon","family":"Oh","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hoonsik","family":"Bae","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Tae\u2010Suk","family":"Suh","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2010,2,18]]},"reference":[{"key":"e_1_2_6_2_1","doi-asserted-by":"publisher","DOI":"10.1118\/1.2436972"},{"key":"e_1_2_6_3_1","doi-asserted-by":"publisher","DOI":"10.1118\/1.2776671"},{"key":"e_1_2_6_4_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.canrad.2006.05.009"},{"key":"e_1_2_6_5_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.meddos.2005.12.002"},{"key":"e_1_2_6_6_1","doi-asserted-by":"publisher","DOI":"10.1118\/1.1514578"},{"key":"e_1_2_6_7_1","doi-asserted-by":"publisher","DOI":"10.1118\/1.1896452"},{"key":"e_1_2_6_8_1","doi-asserted-by":"publisher","DOI":"10.1118\/1.2740009"},{"key":"e_1_2_6_9_1","doi-asserted-by":"publisher","DOI":"10.1118\/1.1751011"},{"key":"e_1_2_6_10_1","doi-asserted-by":"publisher","DOI":"10.1118\/1.2995759"},{"key":"e_1_2_6_11_1","doi-asserted-by":"publisher","DOI":"10.1118\/1.1406524"},{"key":"e_1_2_6_12_1","doi-asserted-by":"publisher","DOI":"10.1088\/0031-9155\/52\/4\/023"},{"key":"e_1_2_6_13_1","doi-asserted-by":"publisher","DOI":"10.1118\/1.1644518"}],"container-title":["Medical Physics"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.wiley.com\/onlinelibrary\/tdm\/v1\/articles\/10.1118%2F1.3310806","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/api.wiley.com\/onlinelibrary\/tdm\/v1\/articles\/10.1118%2F1.3310806","content-type":"unspecified","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/aapm.onlinelibrary.wiley.com\/doi\/pdf\/10.1118\/1.3310806","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,9,17]],"date-time":"2023-09-17T02:18:32Z","timestamp":1694917112000},"score":1,"resource":{"primary":{"URL":"https:\/\/aapm.onlinelibrary.wiley.com\/doi\/10.1118\/1.3310806"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2010,2,18]]},"references-count":12,"journal-issue":{"issue":"3","published-print":{"date-parts":[[2010,3]]}},"alternative-id":["10.1118\/1.3310806"],"URL":"https:\/\/doi.org\/10.1118\/1.3310806","archive":["Portico"],"relation":{},"ISSN":["0094-2405","2473-4209"],"issn-type":[{"value":"0094-2405","type":"print"},{"value":"2473-4209","type":"electronic"}],"subject":[],"published":{"date-parts":[[2010,2,18]]}}}