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Title: Visualization of carotid vessel wall and atherosclerotic plaque: T₁-SPACE vs. compressed sensing T₁-SPACE
Authors: Okuchi, Sachi
Fushimi, Yasutaka
Okada, Tomohisa
Yamamoto, Akira
Okada, Tsutomu
Kikuchi, Takayuki
Yoshida, Kazumichi
Miyamoto, Susumu
Togashi, Kaori
Author's alias: 奥知, 左智
伏見, 育崇
岡田, 知久
山本, 憲
岡田, 務
菊池, 隆幸
吉田, 和道
宮本, 享
富樫, かおり
Keywords: Magnetic resonance imaging
Carotid stenosis
Atherosclerosis
Artifacts
Image reconstruction
Issue Date: Aug-2019
Publisher: Springer Berlin Heidelberg
Journal title: European Radiology
Volume: 29
Issue: 8
Start page: 4114
End page: 4122
Abstract: [Objectives]To compare visualization of carotid plaques and vessel walls between 3D T₁-fast spin echo imaging with conventional SPACE (T₁-SPACE) and with a prototype compressed sensing T₁-SPACE (CS-T₁-SPACE) [Methods]This retrospective study was approved by the institutional review board. Participants comprised 43 patients (36 males, 7 females; mean age, 71 years) who underwent carotid MRI including T₁-SPACE and CS-T₁-SPACE. The quality of visualization for carotid plaques and vessel walls was evaluated using a 5-point scale, and signal intensity ratios (SRs) of the carotid plaques were measured and normalized to the adjacent sternomastoid muscle. Scores for the quality of visualization were compared between T₁-SPACE and CS-T₁-SPACE using the Wilcoxon signed-rank test. Statistical differences between SRs of plaques with T₁-SPACE and CS-T₁-SPACE were also evaluated using the Wilcoxon signed-rank test, and Spearman’s correlation coefficient was calculated to investigate correlations. [Results]Visualization scores were significantly higher for CS-T₁-SPACE than for T₁-SPACE when evaluating carotid plaques (p = 0.0212) and vessel walls (p < 0.001). The SR of plaques did not differ significantly between T₁-SPACE and CS-T₁-SPACE (p = 0.5971). Spearman’s correlation coefficient was significant (0.884; p < 0.0001). [Conclusions]CS-T₁-SPACE allowed better visualization scores and sharpness compared with T₁-SPACE in evaluating carotid plaques and vessel walls, with a 2.5-fold accelerated scan time with comparable image quality. CS-T₁-SPACE appears promising as a method for investigating carotid vessel walls, offering better image quality with a shorter acquisition time.
Rights: This is a post-peer-review, pre-copyedit version of an article published in 'European Radiology'. The final authenticated version is available online at: https://doi.org/10.1007/s00330-018-5862-8
The full-text file will be made open to the public on 06 December 2019 in accordance with publisher's 'Terms and Conditions for Self-Archiving'
This is not the published version. Please cite only the published version. この論文は出版社版でありません。引用の際には出版社版をご確認ご利用ください。
URI: http://hdl.handle.net/2433/242961
DOI(Published Version): 10.1007/s00330-018-5862-8
PubMed ID: 30523455
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