{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,1,18]],"date-time":"2025-01-18T19:10:17Z","timestamp":1737227417537,"version":"3.33.0"},"reference-count":7,"publisher":"Wiley","issue":"12","license":[{"start":{"date-parts":[[2007,3,21]],"date-time":"2007-03-21T00:00:00Z","timestamp":1174435200000},"content-version":"vor","delay-in-days":5558,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Systems &amp; Computers in Japan"],"published-print":{"date-parts":[[1992,1]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>In this paper, we propose an image reconstruction method and computed tomography (CT) equipment with high resolving power that generates three\u2010dimensional CT images at a high speed. In the proposed method, an X\u2010ray source that irradiates conical X\u2010rays and a two\u2010dimensional detector which consists of fan\u2010beam detector arrays stacked in the direction of the object's axis rotate continuously at the same time the bed carrying the object translates in the visual field. This method is called a helical scan because the object is fixed and the X\u2010rays move on a helix and the same measurement data are obtained. We have previously proposed a scanning method in which the X\u2010ray source moves on a helix [4, 6]. However, the physical implementation of the previous proposal was difficult because it was assumed that the X\u2010ray beam completely covers the object. In this paper, in order to solve this problem, the implementation of a helical scan is based on a practical model that combines continuous rotation of an X\u2010ray source and a two\u2010dimensional detector and translation of the object. We derive an approximate reconstruction method based on the convolution\/back\u2010projection method for fan\u2010beam projections. We also perform simulation tests based on a model of the human head and demonstrate the effectiveness of the proposed method.<\/jats:p>","DOI":"10.1002\/scj.4690231207","type":"journal-article","created":{"date-parts":[[2007,7,7]],"date-time":"2007-07-07T22:45:19Z","timestamp":1183848319000},"page":"75-82","source":"Crossref","is-referenced-by-count":10,"title":["Three\u2010dimensional helical\u2010scan computed tomography using cone\u2010beam projections"],"prefix":"10.1002","volume":"23","author":[{"given":"Hiroyuki","family":"Kudo","sequence":"first","affiliation":[]},{"given":"Tsuneo","family":"Saito","sequence":"additional","affiliation":[]}],"member":"311","published-online":{"date-parts":[[2007,3,21]]},"reference":[{"key":"e_1_2_1_2_2","doi-asserted-by":"crossref","unstructured":"Y.BreslerandC. J.Skrabacz.Optimal interpolation in helical scan 3\u2010D computerized tomography. Proc. ICASSP '89 pp.1472\u20131475(1989).","DOI":"10.1109\/ICASSP.1989.266718"},{"key":"e_1_2_1_3_2","doi-asserted-by":"publisher","DOI":"10.1364\/JOSAA.1.000612"},{"key":"e_1_2_1_4_2","doi-asserted-by":"publisher","DOI":"10.1109\/TMI.1987.4307799"},{"key":"e_1_2_1_5_2","doi-asserted-by":"publisher","DOI":"10.1364\/JOSAA.7.002169"},{"key":"e_1_2_1_6_2","first-page":"157","article-title":"Three\u2010dimensional CT Image Reconstruction from Dual Cone\u2010Beam Scanned Projections","volume":"72","author":"Kudo H.","year":"1989","journal-title":"Shingakuron (D\u2010II)"},{"issue":"6","key":"e_1_2_1_7_2","first-page":"954","article-title":"Three\u2010dimensional CT Image Reconstruction from Helical\u2010Scanned Cone\u2010Beam Projections","volume":"72","author":"Kudo H.","year":"1989","journal-title":"Shingakuron (D\u2010II)"},{"key":"e_1_2_1_8_2","doi-asserted-by":"publisher","DOI":"10.1118\/1.594519"}],"container-title":["Systems and Computers in Japan"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.wiley.com\/onlinelibrary\/tdm\/v1\/articles\/10.1002%2Fscj.4690231207","content-type":"unspecified","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/scj.4690231207","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,1,18]],"date-time":"2025-01-18T18:40:36Z","timestamp":1737225636000},"score":1,"resource":{"primary":{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/10.1002\/scj.4690231207"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[1992,1]]},"references-count":7,"journal-issue":{"issue":"12","published-print":{"date-parts":[[1992,1]]}},"alternative-id":["10.1002\/scj.4690231207"],"URL":"https:\/\/doi.org\/10.1002\/scj.4690231207","archive":["Portico"],"relation":{},"ISSN":["0882-1666","1520-684X"],"issn-type":[{"type":"print","value":"0882-1666"},{"type":"electronic","value":"1520-684X"}],"subject":[],"published":{"date-parts":[[1992,1]]}}}