CORRELATION OF CINE MR VELOCITY-MEASUREMENTS IN THE INTERNAL CAROTID-ARTERY WITH COLLATERAL FLOW IN THE CIRCLE OF WILLIS - PRELIMINARY-STUDY

被引：20

作者：

DAVIS, WL

TURSKI, PA

GORBATENKO, KG

WEBER, D

机构：

[1] Department of Radiology, University of Utah Medical Center, Salt Lake City, Utah, 84132

[2] Department of Radiology, University of Wisconsin Health Sciences Center, Madison

[3] Department of GE Medical Systems, Milwaukee, Wisconsin

来源：

JMRI-JOURNAL OF MAGNETIC RESONANCE IMAGING | 1993年 / 3卷 / 04期

关键词：

CAROTID ARTERIES; FLOW DYNAMICS; STENOSIS OR OBSTRUCTION; CEREBRAL BLOOD VESSELS; CINE STUDIES; PHASE IMAGING; VASCULAR STUDIES; VELOCITY STUDIES;

D O I：

10.1002/jmri.1880030409

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 velocity-phase relationship intrinsic to phase-contrast magnetic resonance (MR) angiography permits the quantitative and qualitative assessment of blood flow. The ability to measure velocity and vessel cross-sectional area allows noninvasive assessment of volume flow rate (VFR) in the internal carotid artery (ICA). Phase-contrast techniques also demonstrate flow direction. Using two-dimensional cine phase-contrast angiography, the authors evaluated VFR in the ICA and collateral flow about the circle of Willis in 15 patients with ischemic neurologic symptoms. The VFR in each carotid artery was correlated with the degree of stenosis and presence or absence of abnormal circle of Willis collateral flow. There was a correlation between a decrease in VFR and abnormal circle of Willis collateral flow. In addition, a correlation between severe stenosis and a decrease in VFR was found. In patients with ischemic neurologic symptoms without severe stenosis (< 70% diameter stenosis), no decrease in VFR was seen. It is hoped that flow quantification and directional flow imaging with phase-contrast angiography will help further characterize carotid artery occlusive disease by enabling assessment of VFR changes associated with ischemic neurologic symptoms. This study also supports the hypothesis that two mechanisms hemodynamic and embolic-play a role in ischemic neurologic symptoms.

引用

页码：603 / 609

页数：7

共 39 条

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