MR IMAGING OF BLOOD-VESSELS WITH AN INTRAVASCULAR COIL

被引：75

作者：

MARTIN, AJ

PLEWES, DB

HENKELMAN, RM

机构：

[1] Sunnybrook Health Science Centre, Department of Medical Biophysics, University of Toronto, Toronto, Ontario, M4N 3M5

来源：

JMRI-JOURNAL OF MAGNETIC RESONANCE IMAGING | 1992年 / 2卷 / 04期

关键词：

ARTERIOSCLEROSIS; BLOOD VESSELS; HIGH-RESOLUTION IMAGING; INTRAVASCULAR COILS; PHANTOMS; TECHNOLOGY; VASCULAR STUDIES;

D O I：

10.1002/jmri.1880020411

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：

A method for producing high-resolution magnetic resonance (MR) images of blood vessel walls is described. The authors review a theoretical analysis of receiver-coil design and present a coil well suited for intravascular MR imaging. The design is based on two coaxial solenoids separated by a gap region and with current driven in opposite directions. Placement of this receiver coil within the vascular space is shown to provide a substantial increase in sensitivity over that of external surface coils. Experimental verification of these predictions was obtained in a vessel phantom in which a 13-cm surface coil was compared with a 3.5-mm-diameter opposed-solenoid intravascular coil. This intravascular coil had a cylindric region of high sensitivity that offered a 10-fold improvement in signal-to-noise ratio over that of an external coil near the vessel wall. The performance of this coil was also tested in the jugular vein of a swine.

引用

页码：421 / 429

页数：9

共 37 条

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