Document Detail

MR imaging of the knee with a 0.064-T permanent magnet.
MedLine Citation:
PMID:  2343129     Owner:  NLM     Status:  MEDLINE    
Magnetic resonance (MR) imaging has proved beneficial in the evaluation of internal derangements of the knee. A limitation to general acceptance of MR imaging of the knee has been availability and cost. The recent introduction of low-field-strength MR imaging has shown promise in decreasing the cost and increasing the availability of this modality. High-resolution (pixel size, 0.7 mm2), three-dimensional Fourier transform (3DFT), thin-section (3.5 mm) imaging performed on a 0.064-T permanent magnet was used to evaluate 117 knees in 114 consecutive patients. The appearance of normal anatomy and internal derangements of the knee at low-field-strength imaging is described. Arthroscopic correlation was available for 28 knees. Findings from low-field-strength MR imaging and arthroscopy agreed in 79% of cases in the determination of meniscal tears. Partial-flip-angle techniques with 3DFT produced thin-section images of the knee of diagnostic quality. The authors conclude that in patients with internal derangements of the knee, low-field-strength (0.064-T) MR imaging may provide useful information.
P A Rothschild; J M Domesek; L Kaufman; D M Kramer; S F Dye; L J Anderson; J L Lewis; M K Gon
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Radiology     Volume:  175     ISSN:  0033-8419     ISO Abbreviation:  Radiology     Publication Date:  1990 Jun 
Date Detail:
Created Date:  1990-06-26     Completed Date:  1990-06-26     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0401260     Medline TA:  Radiology     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  775-8     Citation Subset:  AIM; IM    
Radiologic Imaging Laboratory, University of California, San Francisco 94080.
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MeSH Terms
Aged, 80 and over
Joint Diseases / diagnosis
Knee Injuries / diagnosis
Knee Joint / anatomy & histology,  pathology*
Magnetic Resonance Imaging* / instrumentation
Middle Aged

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