{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2024,1,22]],"date-time":"2024-01-22T23:56:25Z","timestamp":1705967785721},"reference-count":9,"publisher":"Wiley","issue":"9","license":[{"start":{"date-parts":[[2007,9,5]],"date-time":"2007-09-05T00:00:00Z","timestamp":1188950400000},"content-version":"vor","delay-in-days":5360,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Systems &amp;amp; Computers in Japan"],"published-print":{"date-parts":[[1993,1]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>In an X\u2010ray computed tomography (CT), time to scan an object must be allowed to obtain its projection data. If the object is not steady during the scanning, its reconstructed image would contain errors called \u201cmotion artifacts.\u201d Recently, two kinds of motion artifact, \u201cblurred image\u201d and \u201cstroboscopic image,\u201d have been found in clinical experience, and their theoretical analyses have been demanded. Assuming that an object is a rigid body, its motion can be divided into rotary and parallel motions.<\/jats:p><jats:p>This paper analyzes the degradation of reconstructed images and artifacts due to the rotary motion of a rigid object. The degradation of a CT image caused by rotation of an arbitrarily shaped rigid object is formulated by using a point\u2010spread function. The characteristics of blurred images of a rigid object due to its rotation in a CT and the shape of blurred images also are analyzed. The cause of stroboscopic images is explained by using line sources. The theories have been confirmed by computer simulation.<\/jats:p>","DOI":"10.1002\/scj.4690240908","type":"journal-article","created":{"date-parts":[[2007,7,8]],"date-time":"2007-07-08T01:33:17Z","timestamp":1183858397000},"page":"76-83","source":"Crossref","is-referenced-by-count":1,"title":["Image degradation and stroboscopic images caused by rotary motion of the object in X\u2010ray computed tomography"],"prefix":"10.1002","volume":"24","author":[{"given":"Takashi","family":"Sakamoto","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Shunsuke","family":"Sato","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2007,9,5]]},"reference":[{"issue":"10","key":"e_1_2_1_2_2","doi-asserted-by":"crossref","first-page":"1800","DOI":"10.6009\/jjrt.KJ00003532580","article-title":"Evaluation of ultra\u2010fast CT and its clinical applications","volume":"47","author":"Sakashita Y.","year":"1991","journal-title":"Japanese Journal of Radiological Technology"},{"key":"e_1_2_1_3_2","first-page":"1","article-title":"A simulation study of motion artifacts in computed tomography","volume":"27","author":"Yang C. K.","journal-title":"Phys. Med. Biol."},{"issue":"1","key":"e_1_2_1_4_2","doi-asserted-by":"crossref","first-page":"62","DOI":"10.6009\/jjrt.KJ00003324418","article-title":"Technical evaluation of ultrafast CT","volume":"48","author":"Sakashita Y.","year":"1992","journal-title":"Japanese Journal of Radiological Technology"},{"issue":"6","key":"e_1_2_1_5_2","doi-asserted-by":"crossref","first-page":"852","DOI":"10.6009\/jjrt.KJ00003576682","article-title":"Experimental phantom for moving object; motion artifact","volume":"48","author":"Sakasita Y.","year":"1992","journal-title":"Japanese Journal of Radiological Technology"},{"key":"e_1_2_1_6_2","article-title":"Motion artifact caused by rotating object in CT images, Papers of Technical Group on Medical and Biological Engineering","volume":"90","author":"Sakamoto T.","year":"1990","journal-title":"I.E.I.C.E., Japan"},{"key":"e_1_2_1_7_2","article-title":"Stroboscope effect in X\u2010ray CT image due to rotation of object","volume":"90","author":"Sakamoto T.","year":"1991","journal-title":"I.E.I.C.E., Japan"},{"issue":"3","key":"e_1_2_1_8_2","first-page":"747","article-title":"Motion artifacts in the X\u2010ray CT Image of a revolving point object","volume":"76","author":"Sakamoto T.","year":"1993","journal-title":"Trans. I.E.I.C.E., Japan"},{"key":"e_1_2_1_9_2","volume-title":"Digital Picture Processing","author":"Rosenfild A.","year":"1982"},{"issue":"12","key":"e_1_2_1_10_2","first-page":"2029","article-title":"Reconstruction of magnetic images by iterative method","volume":"73","author":"Kudo H.","year":"1990","journal-title":"Trans. I.E.I.C.E., Japan"}],"container-title":["Systems and Computers in Japan"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.wiley.com\/onlinelibrary\/tdm\/v1\/articles\/10.1002%2Fscj.4690240908","content-type":"unspecified","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/scj.4690240908","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,10,25]],"date-time":"2023-10-25T12:30:29Z","timestamp":1698237029000},"score":1,"resource":{"primary":{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/10.1002\/scj.4690240908"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[1993,1]]},"references-count":9,"journal-issue":{"issue":"9","published-print":{"date-parts":[[1993,1]]}},"alternative-id":["10.1002\/scj.4690240908"],"URL":"https:\/\/doi.org\/10.1002\/scj.4690240908","archive":["Portico"],"relation":{},"ISSN":["0882-1666","1520-684X"],"issn-type":[{"value":"0882-1666","type":"print"},{"value":"1520-684X","type":"electronic"}],"subject":[],"published":{"date-parts":[[1993,1]]}}}