Magnetic resonance angiography with compressed sensing: An evaluation of moyamoya disease

被引:41
作者
Yamamoto, Takayuki [1 ]
Okada, Tomohisa [1 ]
Fushimi, Yasutaka [1 ]
Yamamoto, Akira [1 ]
Fujimoto, Koji [1 ]
Okuchi, Sachi [1 ]
Fukutomi, Hikaru [1 ]
Takahashi, Jun C. [1 ,2 ]
Funaki, Takeshi [3 ]
Miyamoto, Susumu [3 ]
Stalder, Aurelien F. [4 ]
Natsuaki, Yutaka [5 ]
Speier, Peter [6 ]
Togashi, Kaori [1 ]
机构
[1] Kyoto Univ, Grad Sch Med, Dept Diagnost Imaging & Nucl Med, Kyoto, Japan
[2] Natl Cerebral & Cardiovasc Ctr, Dept Neurosurg, Suita, Osaka, Japan
[3] Kyoto Univ, Grad Sch Med, Dept Neurosurg, Kyoto, Japan
[4] Siemens Ltd China, Shanghai, Peoples R China
[5] Siemens Med Solut USA Inc, Huntington Beach, CA USA
[6] Siemens Healthcare, Erlangen, Germany
来源
PLOS ONE | 2018年 / 13卷 / 01期
关键词
FREE PRECESSION ANGIOGRAPHY; CONVENTIONAL ANGIOGRAPHY; MR-ANGIOGRAPHY; RECONSTRUCTION; DIAGNOSIS; OPTIMIZATION; ACQUISITION; VESSELS; 3T;
D O I
10.1371/journal.pone.0189493
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
Compressed 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.. 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 (k>.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).
引用
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页数:11
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