{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,11,7]],"date-time":"2025-11-07T09:48:09Z","timestamp":1762508889341},"reference-count":29,"publisher":"Oxford University Press (OUP)","issue":"1","license":[{"start":{"date-parts":[[2022,12,17]],"date-time":"2022-12-17T00:00:00Z","timestamp":1671235200000},"content-version":"vor","delay-in-days":2,"URL":"https:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2023,1,20]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>We conducted a prospective study to quantitatively evaluate the movement of the chest wall to establish the simple and reproducible deep-inspiration breath-hold (DIBH) method. The left nipple position was monitored to confirm the inspiratory state. Planning computed tomography (CT) was performed under DIBH and free-breath. We conducted radiation plans with DIBH and free-breath CT and evaluated organ at risk (OAR) and target doses according to two different plans. The relationship between positioning errors of the chest wall and patient factors was evaluated using univariate analysis and fixed-effects models. Twenty-three patients aged \u2264 60\u00a0years were enrolled during January\u2013August 2021; 358 daily radiation treatments were evaluated. The median time of treatment room occupancy was 16\u00a0minutes (interquartile range, 14\u201320). The area of the planning target volume (PTV) surrounded by the 95% isodose line was more extensive in DIBH than in free breathing (71.6% vs 69.5%, P\u2009&amp;lt;\u20090.01), whereas the cardiac and left anterior descending (LAD) artery doses were lower (both P\u2009&amp;lt;\u20090.01). In the fixed-effects model analysis, the occupation time of the treatment room was correlated with positioning error. The difference between the planned and irradiated dose was the largest in the LAD branch of the coronary artery (\u22122.5\u00a0Gy), although the OAR dose decreased owing to positional error. The current DIBH method, wherein a single point on the chest wall is monitored to confirm that the patient is in an inspiratory state, allows radiation to be performed in a short time with a small dose error.<\/jats:p>","DOI":"10.1093\/jrr\/rrac083","type":"journal-article","created":{"date-parts":[[2022,12,17]],"date-time":"2022-12-17T18:16:57Z","timestamp":1671301017000},"page":"171-179","source":"Crossref","is-referenced-by-count":1,"title":["Development of deep-inspiration breath-hold system that monitors the position of the chest wall using infrared rangefinder"],"prefix":"10.1093","volume":"64","author":[{"given":"Masaki","family":"Oshima","sequence":"first","affiliation":[{"name":"Department of Radiation Oncology , , 21-1 Hongo, Bunkyo-ku, Tokyo 113-8421 , Japan"},{"name":"Juntendo University, Graduate School of Medicine , , 21-1 Hongo, Bunkyo-ku, Tokyo 113-8421 , Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Naoto","family":"Shikama","sequence":"additional","affiliation":[{"name":"Department of Radiation Oncology , , 21-1 Hongo, Bunkyo-ku, Tokyo 113-8421 , Japan"},{"name":"Juntendo University, Graduate School of Medicine , , 21-1 Hongo, Bunkyo-ku, Tokyo 113-8421 , Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Keisuke","family":"Usui","sequence":"additional","affiliation":[{"name":"Department of Radiation Oncology , , 21-1 Hongo, Bunkyo-ku, Tokyo 113-8421 , Japan"},{"name":"Juntendo University, Graduate School of Medicine , , 21-1 Hongo, Bunkyo-ku, Tokyo 113-8421 , Japan"},{"name":"Department of Radiological Technology , , 21-1 Hongo, Bunkyo-ku, Tokyo 113-8421 , Japan"},{"name":"Juntendo University , , 21-1 Hongo, Bunkyo-ku, Tokyo 113-8421 , Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Shuko","family":"Nojiri","sequence":"additional","affiliation":[{"name":"Medical Technology Innovation Center , , 21-1 Hongo, Bunkyo-ku, Tokyo 113-8421 , Japan"},{"name":"Juntendo University , , 21-1 Hongo, Bunkyo-ku, Tokyo 113-8421 , Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Akira","family":"Isobe","sequence":"additional","affiliation":[{"name":"Department of Radiology , , 21-1 Hongo, Bunkyo-ku, Tokyo 113-8421 , Japan"},{"name":"Juntendo University Hospital , , 21-1 Hongo, Bunkyo-ku, Tokyo 113-8421 , Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yoichi","family":"Muramoto","sequence":"additional","affiliation":[{"name":"Department of Radiation Oncology , , 21-1 Hongo, Bunkyo-ku, Tokyo 113-8421 , Japan"},{"name":"Juntendo University, Graduate School of Medicine , , 21-1 Hongo, Bunkyo-ku, Tokyo 113-8421 , Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Terufumi","family":"Kawamoto","sequence":"additional","affiliation":[{"name":"Department of Radiation Oncology , , 21-1 Hongo, Bunkyo-ku, Tokyo 113-8421 , Japan"},{"name":"Juntendo University, Graduate School of Medicine , , 21-1 Hongo, Bunkyo-ku, Tokyo 113-8421 , Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Nanae","family":"Yamaguchi","sequence":"additional","affiliation":[{"name":"Department of Radiation Oncology , , 21-1 Hongo, Bunkyo-ku, Tokyo 113-8421 , Japan"},{"name":"Juntendo University, Graduate School of Medicine , , 21-1 Hongo, Bunkyo-ku, Tokyo 113-8421 , Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yasuo","family":"Kosugi","sequence":"additional","affiliation":[{"name":"Department of Radiation Oncology , , 21-1 Hongo, Bunkyo-ku, Tokyo 113-8421 , Japan"},{"name":"Juntendo University, Graduate School of Medicine , , 21-1 Hongo, Bunkyo-ku, Tokyo 113-8421 , Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Keisuke","family":"Sasai","sequence":"additional","affiliation":[{"name":"Department of Radiation Oncology , , 21-1 Hongo, Bunkyo-ku, Tokyo 113-8421 , Japan"},{"name":"Juntendo University, Graduate School of Medicine , , 21-1 Hongo, Bunkyo-ku, Tokyo 113-8421 , Japan"},{"name":"Misugikai Satou Hospital, Department of Radiation Oncology , 65-1 Yabuhigashimachi, Hirakata-shi, Osaka 573-1124, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"286","published-online":{"date-parts":[[2022,12,15]]},"reference":[{"key":"2023012016004903300_ref1","doi-asserted-by":"crossref","first-page":"1707","DOI":"10.1016\/S0140-6736(11)61629-2","article-title":"Effect of radiotherapy after breast-conserving surgery on 10-year recurrence and 15-year breast cancer death: meta-analysis of individual patient data for 10,801 women in 17 randomised trials","volume":"378","author":"Early Breast Cancer Trialists' Collaborative","year":"2011","journal-title":"Lancet"},{"key":"2023012016004903300_ref2","doi-asserted-by":"crossref","first-page":"865","DOI":"10.1093\/jjco\/hyab024","article-title":"Final analysis of a 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