Optimized visualization of vessels in contrast enhanced intracranial MR angiography

被引：33

作者：

Parker, DL

Goodrich, KC

Alexander, AL

Buswell, HR

Blatter, DD

Tsuruda, JS

机构：

[1] Univ Utah, Dept Radiol, Ctr Adv Med Technol, Med Imaging Res Lab, Salt Lake City, UT 84108 USA

[2] LDS Hosp, Dept Radiol, Salt Lake City, UT USA

来源：

MAGNETIC RESONANCE IN MEDICINE | 1998年 / 40卷 / 06期

关键词：

magnetic resonance imaging; magnetic resonance angiography; Gd contrast; angiography; vessel visualization;

D O I：

10.1002/mrm.1910400613

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：

In this study, the problem of small vessel visualization in magnetic resonance angiography is addressed. The loss of vessel contrast due to slow flow-related signal saturation can be compensated by the T-1 reduction obtained from the use of an MR contrast agent, such as Gd-DTPA, The vessel/background signal-difference-to-noise ratio (SDNR) is shown to strongly depend on the imaging parameters, as well as on the time course of the blood T-1 values obtained from the contrast injection, Specifically, it was found that vessel SDNR increases almost linearly with TR, if the sampling bandwidth is reduced proportionately.

引用

收藏

页码：873 / 882

页数：10

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