3D time-resolved contrast-enhanced MR DSA: Advantages and tradeoffs

被引:79
作者
Mistretta, CA
Grist, TM
Korosec, FR
Frayne, R
Peters, DC
Mazaheri, Y
Carroll, TJ
机构
[1] Univ Wisconsin, Dept Med Phys, Madison, WI 53706 USA
[2] Univ Wisconsin, Dept Radiol, Madison, WI 53706 USA
[3] Univ Wisconsin, Dept Phys, Madison, WI 53706 USA
关键词
contrast; magnetic resonance; angiography; time-resolved;
D O I
10.1002/mrm.1910400410
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
The 3D TRICKS method for contrast-enhanced, time-resolved MR DSA has been recently described, In this paper, computer simulations are used to investigate the relative frame rate, temporal window, artery-vein temporal separation, contrast-to-noise ratio, and spatial resolution of TRICKS and conventional scans for breath-hold and non-breath-hold applications, For non-breath-hold applications, TRICKS can be configured to provide increased CNR or spatial resolution at an increased frame rate, but with a longer temporal window when compared with a series of conventional scans in which the central portion of k-space is sampled at the same rate as for the TRICKS scans, For breath-hold applications, TRICKS typically provides three images with 75% of the conventional single acquisition spatial resolution and is more tolerant of variations in contrast curve shape within the field of view.
引用
收藏
页码:571 / 581
页数:11
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