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dc.contributor.authorYamamoto, Takayuki
dc.contributor.authorOkada, Tomohisa
dc.contributor.authorFushimi, Yasutaka
dc.contributor.authorYamamoto, Akira
dc.contributor.authorFujimoto, Koji
dc.contributor.authorOkuchi, Sachi
dc.contributor.authorFukutomi, Hikaru
dc.contributor.authorTakahashi, Jun C.
dc.contributor.authorFunaki, Takeshi
dc.contributor.authorMiyamoto, Susumu
dc.contributor.authorStalder, Aurélien F.
dc.contributor.authorNatsuaki, Yutaka
dc.contributor.authorSpeier, Peter
dc.contributor.authorTogashi, Kaori
dc.contributor.alternative岡田, 知久
dc.contributor.alternative伏見, 育崇
dc.contributor.alternative山本, 憲
dc.contributor.alternative藤本, 晃司
dc.contributor.alternative福富, 光
dc.contributor.alternative高橋, 淳
dc.contributor.alternative舟木, 健史
dc.contributor.alternative宮本, 享
dc.contributor.alternative富樫, かおり
dc.date.accessioned2018-04-23T00:44:03Z-
dc.date.available2018-04-23T00:44:03Z-
dc.date.issued2018-01-19
dc.identifier.issn1932-6203
dc.identifier.urihttp://hdl.handle.net/2433/230796-
dc.description.abstractCompressed sensing (CS) reconstructions of under-sampled measurements generate missing data based on assumptions of image sparsity. Non-contrast time-of-flight MR angiography (TOF-MRA) is a good candidate for CS based acceleration, as MRA images feature bright trees of sparse vessels over a well-suppressed anatomical background signal. A short scan time derived from CS is beneficial for patients of moyamoya disease (MMD) because of the frequency of MR scans. The purpose of this study was to investigate the reliability of TOF-MRA with CS in the evaluation of MMD. Twenty-two patients were examined using TOF-MRA with CS (CS-TOF) and parallel imaging (PI-TOF). The acceleration factors were 3 (CS3) and 5 (CS5) for CS-TOF, and 3 (PI3) for PI-TOF. Two neuroradiologists evaluated the MMD grading according to stenosis/occlusion scores using the modified Houkin’s system, and the visibility of moyamoya vessels (MMVs) using a 3-point scale. Concordance was calculated with Cohen’s κ. The numbers of MMVs in the basal ganglia were compared using Bland-Altman analysis and Wilcoxon’s signed-rank tests. MRA scan times were 4:07, 3:53, and 2:42 for PI3, CS3, and CS5, respectively. CS-reconstruction completed within 10 minutes. MMD grading and MMV visibility scales showed excellent correlation (κ > .966). Although the number of MMVs was significantly higher in CS3 than in PI3 (p < .0001) and CS5 (p < .0001), Bland-Altman analysis showed a good agreement between PI3, CS3, and CS5. Compressed sensing can accelerate TOF-MRA with improved visualization of small collaterals in equivalent time (CS3) or equivalent results in a shorter scan time (CS5).
dc.format.mimetypeapplication/pdf
dc.language.isoeng
dc.publisherPublic Library of Science (PLoS)
dc.rights© 2018 Yamamoto et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
dc.titleMagnetic resonance angiography with compressed sensing: An evaluation of moyamoya disease
dc.type.niitypeJournal Article
dc.identifier.jtitlePLOS ONE
dc.identifier.volume13
dc.identifier.issue1
dc.relation.doi10.1371/journal.pone.0189493
dc.textversionpublisher
dc.identifier.artnume0189493
dc.addressDepartment of Diagnostic Imaging and Nuclear Medicine, Graduate School of Medicine, Kyoto University
dc.addressDepartment of Diagnostic Imaging and Nuclear Medicine, Graduate School of Medicine, Kyoto University
dc.addressDepartment of Diagnostic Imaging and Nuclear Medicine, Graduate School of Medicine, Kyoto University
dc.addressDepartment of Diagnostic Imaging and Nuclear Medicine, Graduate School of Medicine, Kyoto University
dc.addressDepartment of Diagnostic Imaging and Nuclear Medicine, Graduate School of Medicine, Kyoto University
dc.addressDepartment of Diagnostic Imaging and Nuclear Medicine, Graduate School of Medicine, Kyoto University
dc.addressDepartment of Diagnostic Imaging and Nuclear Medicine, Graduate School of Medicine, Kyoto University
dc.addressDepartment of Diagnostic Imaging and Nuclear Medicine, Graduate School of Medicine, Kyoto University・Department of Neurosurgery, National Cerebral and Cardiovascular Center, Suita
dc.addressDepartment of Neurosurgery, Graduate School of Medicine, Kyoto University
dc.addressDepartment of Neurosurgery, Graduate School of Medicine, Kyoto University
dc.addressSiemens ltd. China
dc.addressSiemens Medical Solutions USA, Inc.
dc.addressSiemens Healthcare
dc.addressDepartment of Diagnostic Imaging and Nuclear Medicine, Graduate School of Medicine, Kyoto University
dc.identifier.pmid29351284
dc.identifier.kaken25120002
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