Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 신태훈 | * |
dc.date.accessioned | 2018-12-14T16:30:38Z | - |
dc.date.available | 2018-12-14T16:30:38Z | - |
dc.date.issued | 2018 | * |
dc.identifier.issn | 0374-4884 | * |
dc.identifier.other | OAK-22768 | * |
dc.identifier.uri | https://dspace.ewha.ac.kr/handle/2015.oak/247649 | - |
dc.description.abstract | Three-dimensional ultrashort echo-time (UTE) imaging with radial k-space acquisition is a well-known MR imaging technique that generates comparable lung images to X-ray and computed tomography (CT). Although researchers have sought to minimize the incidence of motion artifacts, there is still a need to accomplish further reduction of motion artifacts through respiratory gating. In this study, we introduce a robust self-navigation for respiratory gating in 3D radial UTE lung imaging especially based on concurrent dephasing and excitation (CODE). To reduce the baseline fluctuation of self-navigated respiratory signals as well as the dependence on the position of the navigating echoes in the k-space trajectories, both of which originate from varying degrees of steadystate condition outside the fully excited regions of a spin system in CODE-MRI, we proposed a new self-navigation method which applies dual navigating echoes successively in the superior-inferior direction and takes the second navigating echoes for respiratory-motion tracking. The phantom and human experimental results showed that the proposed method successfully suppressed the baseline fluctuations of the navigating-echo signals and the resulting respiratory signals, thereby reducing the respiratory-motion artifacts like blurring in the human lung images thanks to the improved respiratory gating. © 2018, The Korean Physical Society. | * |
dc.description.sponsorship | National Research Foundation of Korea | * |
dc.language | English | * |
dc.publisher | The Korean Physical Society | * |
dc.subject | 3D radial ultrashort echo-time imaging | * |
dc.subject | Lung MRI | * |
dc.subject | Respiratory gating | * |
dc.subject | Self-navigation | * |
dc.title | A Robust Self-navigation for Respiratory Gating in 3D Radial Ultrashort Echo-time Lung MRI using Concurrent Dephasing and Excitation | * |
dc.type | Article | * |
dc.relation.issue | 1 | * |
dc.relation.volume | 73 | * |
dc.relation.index | SCIE | * |
dc.relation.index | SCOPUS | * |
dc.relation.index | KCI | * |
dc.relation.startpage | 138 | * |
dc.relation.lastpage | 144 | * |
dc.relation.journaltitle | Journal of the Korean Physical Society | * |
dc.identifier.doi | 10.3938/jkps.73.138 | * |
dc.identifier.wosid | WOS:000438475400020 | * |
dc.identifier.scopusid | 2-s2.0-85049746060 | * |
dc.author.google | Park J. | * |
dc.author.google | Lee S. | * |
dc.author.google | Shin T. | * |
dc.author.google | Oh S.-H. | * |
dc.author.google | Park J.-Y. | * |
dc.contributor.scopusid | 신태훈(15061749900) | * |
dc.date.modifydate | 20240322132527 | * |