MAGNETIZATION-PREPARED MR ANGIOGRAPHY WITH FAT SUPPRESSION AND VENOUS SATURATION

被引：12

作者：

RICHARDSON, DB

BAMPTON, AEH

RIEDERER, SJ

MACFALL, JR

机构：

[1] Magnetic Resonance Laboratory, Department of Diagnostic Radiology, Mayo Clinic, Rochester, Minnesota

[2] Duke University Medical Center, Durham, North Carolina

[3] Mcguire Va Medical Center, Richmond, Virginia

来源：

JMRI-JOURNAL OF MAGNETIC RESONANCE IMAGING | 1992年 / 2卷 / 06期

关键词：

FAT SUPPRESSION; FLOW SIMULATION; IMAGE PROCESSING; PHANTOMS; PHASE-ENCODING ORDER; PULSE SEQUENCES; RAPID IMAGING; TISSUE SUPPRESSION; VASCULAR STUDIES;

D O I：

10.1002/jmri.1880020609

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：

Magnetization-prepared magnetic resonance (MR) angiography (MPMRA) is an inflow-based two-dimensional (2D) imaging sequence in which a preparation phase precedes rapid image acquisition. For maximal blood/tissue contrast, an inversion-recovery preparation nulls signal from static tissue. If needed, a second inversion suppresses signal from fat. Fully magnetized blood flows in after the inversion pulse(s), providing high signal intensity. The centric phase-encoding order, which ensures that the initial contrast is reflected in the image set, requires the use of a modified venous saturation technique. The sequence is described and its performance assessed with regard to (a) depiction of in-plane flow, (b) fat suppression, and (c) venous saturation. Phantom and volunteer studies showed good performance in all three areas. MPMRA images, acquired in just 2-4 seconds per image, had a blood/tissue contrast-to-noise ratio nearly twice that of standard 2D time-of-flight MR angiograms, acquired in 5-7 seconds. The technique is promising for restless patients and in anatomic areas plagued by motion degradation.

引用

页码：653 / 664

页数：12

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