Water/Fat-Resolved Whole-Heart Dixon Coronary MRA: An Initial Comparison

被引:42
作者
Boernert, Peter [1 ,2 ]
Koken, Peter [1 ]
Nehrke, Kay [1 ]
Eggers, Holger [1 ]
Ostendorf, Peter [3 ]
机构
[1] Philips Res Europe, Hamburg, Germany
[2] Leiden Univ, Med Ctr, Dept Radiol, Leiden, Netherlands
[3] Marien Hosp, Ctr Prevent Med, Hamburg, Germany
关键词
CMRA; coronary artery; water; fat; SENSE; Dixon; MAGNETIC-RESONANCE ANGIOGRAPHY; STATE-FREE-PRECESSION; RESPIRATORY MOTION; FAT DECOMPOSITION; EPICARDIAL FAT; GRADIENT-ECHO; INFILTRATION; MYOCARDIUM; RESOLUTION;
D O I
10.1002/mrm.24648
中图分类号
R8 [特种医学]; R445 [影像诊断学];
学科分类号
100231 [临床病理学]; 100902 [航空航天医学];
摘要
Purpose To improve coronary vessel visualization in whole-heart coronary magnetic resonance angiography (CMRA), fat suppression is typically applied. However, recent studies have shown that cardiac fat can also have diagnostic value. To enhance CMRA image quality by improved fat suppression and to provide additionally fat-only information highly resolved, dual-echo Dixon CMRA approaches have been developed. MethodsIn this pilot study, approved by the institutional review board, 30 patients were investigated comparing whole-heart T-1-weighted dual-echo Dixon CMRA to conventional whole-heart fat-suppressed balanced fast field echo CMRA, integrated into a routine clinical protocol that includes the administration of gadolinium for perfusion and late enhancement measurements. Signal-to-noise-ratio, contrast-to-noise-ratio, and image quality were analyzed. ResultsDual-echo Dixon significantly (P<0.000001) improved image quality compared with conventional fat-suppressed balanced fast field echo CMRA. Signal-to-noise-ratio and contrast-to-noise-ratio were found to be comparable when balanced fast field echo was performed before gadolinium and dual-echo Dixon fast field echo after gadolinium administration. ConclusionDual-echo Dixon can help to improve whole-heart CMRA image quality significantly. The additional whole-heart fat information delivered by this approach can support a number of new clinical studies addressing the diagnostic and the predictive value of intramyocardial and extramyocardial fatty deposits. Magn Reson Med 71:156-163, 2014. (c) 2013 Wiley Periodicals, Inc.
引用
收藏
页码:156 / 163
页数:8
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