DC Field | Value | Language |
---|---|---|
dc.contributor.author | Lee, Donghyeon | ko |
dc.contributor.author | Yun, Sungho | ko |
dc.contributor.author | Soh, Jeongtae | ko |
dc.contributor.author | Lim, Sunho | ko |
dc.contributor.author | Kim, Hyoyi | ko |
dc.contributor.author | Cho, Seungryong | ko |
dc.date.accessioned | 2022-05-06T07:00:35Z | - |
dc.date.available | 2022-05-06T07:00:35Z | - |
dc.date.created | 2022-05-06 | - |
dc.date.created | 2022-05-06 | - |
dc.date.issued | 2022-04 | - |
dc.identifier.citation | JOURNAL OF X-RAY SCIENCE AND TECHNOLOGY, v.30, no.3, pp.549 - 566 | - |
dc.identifier.issn | 0895-3996 | - |
dc.identifier.uri | http://hdl.handle.net/10203/296386 | - |
dc.description.abstract | BACKGROUND: Dual-energy computed tomography (DECT) is a widely used and actively researched imaging modality that can estimate the physical properties of an object more accurately than single-energy CT (SECT). Recently, iterative reconstruction methods called one-step methods have received attention among various approaches since they can resolve the intermingled limitations of the conventional methods. However, the one-step methods typically have expensive computational costs, and their material decomposition performance is largely affected by the accuracy in the spectral coefficients estimation. OBJECTIVE: In this study, we aim to develop an efficient one-step algorithm that can effectively decompose into the basis material maps and is less sensitive to the accuracy of the spectral coefficients. METHODS: By use of a new loss function that employs the non-linear forward model and the weighted squared errors, we propose a one-step reconstruction algorithm named generalized simultaneous algebraic reconstruction technique (GSART). The proposed algorithm was compared with the image-domain material decomposition and other existing one-step reconstruction algorithm. RESULTS: In both simulation and experimental studies, we demonstrated that the proposed algorithm effectively reduced the beam-hardening artifacts thereby increasing the accuracy in the material decomposition. CONCLUSIONS: The proposed one-step reconstruction for material decomposition in dual-energy CT outperformed the image-domain approach and the existing one-step algorithm. We believe that the proposed method is a practically very useful addition to the material-selective image reconstruction field. | - |
dc.language | English | - |
dc.publisher | IOS PRESS | - |
dc.title | A generalized simultaneous algebraic reconstruction technique (GSART) for dual-energy X-ray computed tomography | - |
dc.type | Article | - |
dc.identifier.wosid | 000783713100010 | - |
dc.identifier.scopusid | 2-s2.0-85128487621 | - |
dc.type.rims | ART | - |
dc.citation.volume | 30 | - |
dc.citation.issue | 3 | - |
dc.citation.beginningpage | 549 | - |
dc.citation.endingpage | 566 | - |
dc.citation.publicationname | JOURNAL OF X-RAY SCIENCE AND TECHNOLOGY | - |
dc.identifier.doi | 10.3233/XST-211054 | - |
dc.contributor.localauthor | Cho, Seungryong | - |
dc.contributor.nonIdAuthor | Soh, Jeongtae | - |
dc.description.isOpenAccess | N | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | X-ray imaging | - |
dc.subject.keywordAuthor | computed tomography (CT) | - |
dc.subject.keywordAuthor | Dual-energy CT | - |
dc.subject.keywordAuthor | material decomposition | - |
dc.subject.keywordAuthor | iterative reconstruction | - |
dc.subject.keywordAuthor | one-step method | - |
dc.subject.keywordPlus | MATERIAL DECOMPOSITION | - |
dc.subject.keywordPlus | IMAGE-RECONSTRUCTION | - |
dc.subject.keywordPlus | CT | - |
dc.subject.keywordPlus | ALGORITHM | - |
dc.subject.keywordPlus | OPTIMIZATION | - |
dc.subject.keywordPlus | CONVERGENCE | - |
dc.subject.keywordPlus | ART | - |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.