Noninvasive method for mapping CVR in moyamoya disease using ASL-MRI

被引:43
|
作者
Noguchi, Tomoyuki [1 ,2 ,3 ]
Kawashima, Masatou [3 ,4 ]
Nishihara, Masashi [2 ,3 ]
Egashira, Yoshiaki [2 ,3 ]
Azama, Shinya [2 ,3 ]
Irie, Hiroyuki [2 ,3 ]
机构
[1] Natl Ctr Global Hlth & Med, Dept Radiol, Shinjuku Ku, Tokyo 1628655, Japan
[2] Saga Univ, Fac Med, Dept Radiol, Saga 8498501, Japan
[3] Saga Univ, Grad Sch Med, Saga 8498501, Japan
[4] Saga Univ, Fac Med, Dept Neurosurg, Saga 8498501, Japan
基金
日本学术振兴会;
关键词
Arterial spin labeling; Moyamoya disease; Brain Perfusion; Pulse wave synchronization; MRI; SPECT; CEREBRAL-BLOOD-FLOW; CEREBROVASCULAR REACTIVITY; EMISSION-TOMOGRAPHY; IMAGING TECHNIQUES; ACETAZOLAMIDE TEST; CLINICAL-FEATURES; ARTERY OCCLUSION; PERFUSION; BRAIN; REVASCULARIZATION;
D O I
10.1016/j.ejrad.2015.03.011
中图分类号
R8 [特种医学]; R445 [影像诊断学];
学科分类号
1002 ; 100207 ; 1009 ;
摘要
Purpose: To project a noninvasive method for mapping cerebrovascular reserve (CVR) in moyamoya disease (MMD) using ASL-MRI. Methods: 16 MMD patients underwent cerebral blood flow (CBF) examinations by standard ASL-MRI, pulse-wave-synchronized ASL-MRI (pulsy ASL-MRI) which tagged the arterial blood coincident with a peak of a pulse wave, and single photon emission computed tomography (SPECT) imagings with iodine123-N-isopropyl-p-iodoamphetamine in the resting (rest-IMP) and after acetazolamide challenge (ACZ-IMP). Hemispheric 32-sided cerebral blood flow (CBF) values were measured with normalized CBF maps created from standard ASL-MRI (standard-ASL value), pulsy ASL-MRI (pulsy-ASL value), rest-IMP (rest-IMP value), and ACZ-IMP (ACZ-IMP value). CVR based on rest-IMP and ACZ-IMP values (IMP-CVR) was calculated. ASL-CVR was also calculated on the basis of corrected standard-ASL values and pulsy-ASL values, which were adjusted to the ACZ-IMP values and rest-IMP values, respectively, by the least-squares method. We assessed the relationships between rest-IMP values and pulsy-ASL values, ACZ-IMP values and standard-ASL values, and IMP-CVR and ASL-CVR. Results: Significant relationships were observed between rest-IMP values and pulsy-ASL values (correlation coefficient (r = 0.557, p < 0.01)), ACZ-IMP values and standard-ASL values (r = 0.825, p < 0.01), and IMP-CVR and ASL-CVR (r=0.736, p<0.01). Conclusions: ASL-MRI is equivalent to SPECT and that it might serve as a noninvasive method for mapping CVR in MMD. (C) 2015 Elsevier Ireland Ltd. All rights reserved.
引用
收藏
页码:1137 / 1143
页数:7
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