LOW-FIELD VERSUS HIGH-FIELD MR-IMAGING OF THE KNEE - A COMPARISON OF SIGNAL BEHAVIOR AND DIAGNOSTIC PERFORMANCE

被引：38

作者：

PARIZEL, PM

DIJKSTRA, HAJ

GEENEN, GPJ

KINT, PAM

VERSTEYLEN, RJ

VANWIECHEN, PJ

DESCHEPPER, AM

机构：

[1] Department of Radiology, Ignatius Ziekenhuis Breda (IZB), 4818 CK Breda

[2] Department of Radiology, University of Antwerp, Edegem

来源：

EUROPEAN JOURNAL OF RADIOLOGY | 1995年 / 19卷 / 02期

关键词：

MAGNETIC RESONANCE (MR) IMAGING; COMPARATIVE STUDIES; COST EFFECTIVENESS; MAGNETIC RESONANCE (MR); LOW-FIELD STRENGTH IMAGING; KNEE; MR STUDIES;

D O I：

10.1016/0720-048X(94)00589-5

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 prospective study was undertaken to compare MR imaging of the knee obtained with low-field and high-field systems. In 10 subjects, MR imaging of the knee was performed on a 0.2 T permanent magnet and on a 1.5 T superconductive system. Similar spin echo (SE) and 3D-FISP (3D Fourier transform with steady state precession) acquisitions were obtained. Comparative image analysis was performed independently by four radiologists. Results show that the image quality and diagnostic performance delivered by state-of-the-art 0.2 T and 1.5 T systems is equivalent. Advantages of the 1.5 T system included: better signal-to-noise ratio, shorter scan times, better visualization of asymptomatic grade 1 meniscal degeneration on SE images. Advantages of 0.2 T images were: decreased chemical shift, susceptibility and flow artifacts, improved evaluation of subchondral bone on 3D-FISP images, slightly better patient tolerance. We conclude that, for MR imaging of the knee, a low-field system is a cost-effective alternative to more expensive superconducting units.

引用

页码：132 / 138

页数：7

共 31 条

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