Title
Low-field versus high-field MR imaging of the knee : a comparison of signal behaviour and diagnostic performance
Author
Faculty/Department
Faculty of Medicine and Health Sciences
Publication type
article
Publication
Stuttgart ,
Subject
Computer. Automation
Source (journal)
European journal of radiology. - Stuttgart
Volume/pages
19(1995) :2 , p. 132-138
ISSN
0720-048X
ISI
A1995QL33700014
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
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.
E-info
https://repository.uantwerpen.be/docman/iruaauth/b29dad/7ac2440.pdf
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