{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,21]],"date-time":"2026-10-21T03:24:38Z","timestamp":1792553078120,"version":"4.5.0"},"reference-count":42,"publisher":"Wiley","issue":"10","license":[{"start":{"date-parts":[[2022,8,5]],"date-time":"2022-08-05T00:00:00Z","timestamp":1659657600000},"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":[[2022,10]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>Dynamic chest radiography (DCR) is a recent advanced modality to acquire dynamic and functional images. We developed a new method using DCR and the free analysis software, Kinovea, to assess lung tumor motion. This study aimed to demonstrate the usefulness of our method. Phantom and clinical studies were performed. In the phantom study, dynamic images of a moving lead sphere were acquired using DCR, and the motion of the phantom was tracked using Kinovea in a DCR video. The amplitude of phantom motion was measured and compared with a predetermined baseline amplitude. In a clinical study, DCR and respiratory\u2010gated four\u2010dimensional computed tomography (4D\u2010CT) were performed on 15 patients who underwent stereotactic body radiation therapy for lung tumors. The amplitudes of tumor motion in DCR and 4D\u2010CT were measured in the superior\u2010inferior (SI), left\u2010right (LR), and anterior\u2010posterior (AP) directions, and the square root of the sum of squares (SRSS) of the amplitude was calculated in all directions. Spearman's rank correlation and the Wilcoxon signed\u2010rank test were performed to determine the correlations of the amplitudes of tumor motion obtained using DCR and 4D\u2010CT. In the phantom study, the absolute mean error between the measured and predetermined amplitudes was 0.60 mm (range: 0.061.53 mm). In the clinical study, the amplitudes of tumor motion obtained using DCR correlated significantly with those of 4D\u2010CT in the SI and LR directions, as did the SRSS values. The median amplitudes for DCR were significantly higher than those for 4D\u2010CT in all (SI, LR, and AP) directions, as were the SRSS values. Our proposed method based on DCR and Kinovea is useful for assessing lung tumor motion, visually and quantitatively. Therefore, DCR has potential as a new modality for evaluating lung tumor motion in radiotherapy.<\/jats:p>","DOI":"10.1002\/acm2.13736","type":"journal-article","created":{"date-parts":[[2022,8,5]],"date-time":"2022-08-05T16:05:36Z","timestamp":1659715536000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":6,"title":["A new method for assessing lung tumor motion in radiotherapy using dynamic chest radiography"],"prefix":"10.1002","volume":"23","author":[{"given":"Kazushi","family":"Kitamura","sequence":"first","affiliation":[{"name":"Department of Radiology Tenri Hospital  Tenri Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kenji","family":"Takayama","sequence":"additional","affiliation":[{"name":"Department of Radiation Oncology Tenri Hospital  Tenri Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ryo","family":"Yamazaki","sequence":"additional","affiliation":[{"name":"Department of Radiology Tenri Hospital  Tenri Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yukihiro","family":"Ueda","sequence":"additional","affiliation":[{"name":"Department of Radiology Tenri Hospital  Tenri Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shigeo","family":"Nishiki","sequence":"additional","affiliation":[{"name":"Japanese Society of Radiological Technology  Shimogyo\u2010ku Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2022,8,5]]},"reference":[{"key":"e_1_2_9_2_1","doi-asserted-by":"publisher","DOI":"10.1118\/1.2349696"},{"key":"e_1_2_9_3_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.clon.2013.11.001"},{"key":"e_1_2_9_4_1","doi-asserted-by":"publisher","DOI":"10.1118\/1.3438081"},{"key":"e_1_2_9_5_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.radonc.2003.09.007"},{"key":"e_1_2_9_6_1","doi-asserted-by":"publisher","DOI":"10.1118\/1.3432615"},{"key":"e_1_2_9_7_1","doi-asserted-by":"publisher","DOI":"10.1118\/1.3298007"},{"key":"e_1_2_9_8_1","doi-asserted-by":"publisher","DOI":"10.1118\/1.1869852"},{"key":"e_1_2_9_9_1","doi-asserted-by":"publisher","DOI":"10.1002\/acm2.12825"},{"key":"e_1_2_9_10_1","doi-asserted-by":"publisher","DOI":"10.1016\/s0360\u20103016(01)01621\u20102"},{"key":"e_1_2_9_11_1","doi-asserted-by":"publisher","DOI":"10.1007\/s12194\u2010016\u20100361\u20106"},{"key":"e_1_2_9_12_1","doi-asserted-by":"publisher","DOI":"10.3348\/kjr.2020.1136"},{"key":"e_1_2_9_13_1","doi-asserted-by":"publisher","DOI":"10.1088\/0031\u20109155\/50\/23\/022"},{"key":"e_1_2_9_14_1","doi-asserted-by":"publisher","DOI":"10.1007\/s11548\u2010010\u20100491\u2010y"},{"key":"e_1_2_9_15_1","doi-asserted-by":"publisher","DOI":"10.1007\/s12194\u2010009\u20100074\u20101"},{"key":"e_1_2_9_16_1","doi-asserted-by":"publisher","DOI":"10.1118\/1.1769351"},{"key":"e_1_2_9_17_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ejrad.2018.12.023"},{"key":"e_1_2_9_18_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ejrad.2016.12.014"},{"key":"e_1_2_9_19_1","doi-asserted-by":"publisher","DOI":"10.1038\/nmeth.2089"},{"issue":"2","key":"e_1_2_9_20_1","first-page":"147","article-title":"Reliability of video\u2010based quantification of the knee\u2010 and hip angle at foot strike during running","volume":"10","author":"Damsted C","year":"2015","journal-title":"Int J Sports Phys Ther"},{"key":"e_1_2_9_21_1","doi-asserted-by":"publisher","DOI":"10.1097\/MD.0000000000019152"},{"key":"e_1_2_9_22_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.physbeh.2020.113144"},{"key":"e_1_2_9_23_1","doi-asserted-by":"publisher","DOI":"10.1002\/rcs.2090"},{"key":"e_1_2_9_24_1","unstructured":"Kinovea \u2013 forums.Kinovea. 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