American Journal of Roentgenology, Vol 155, 829-832, Copyright © 1990 by American Roentgen Ray Society

ARTICLES

MR arthrography of the shoulder: comparison with conventional MR imaging

B Flannigan, S Kursunoglu-Brahme, S Snyder, R Karzel, W Del Pizzo and D Resnick
Department of Radiology, Valley Presbyterian Hospital, Van Nuys, CA 91405.

Twenty-three patients underwent both conventional MR imaging of the shoulder and MR shoulder arthrography for clinically suspected labral or rotator cuff abnormalities. Images obtained before and after contrast administration were studied independently, and without knowledge of clinical findings, by two radiologists for the presence of abnormalities of the glenoid labrum or rotator cuff. Results were correlated with surgical findings in all patients. Nine patients had surgically proved labral tears. MR arthrography detected all nine labral abnormalities, while six of the nine were missed on conventional MR imaging. Fourteen patients had surgically proved rotator cuff tears. MR arthrography detected 11 of the 14 tears and missed three partial tears on the bursal surface. Conventional MR imaging detected nine cuff tears and missed five tears; two of these were complete rotator cuff tears and three were partial tears of the undersurface of the rotator cuff. Our results suggest that MR arthrography enhances the accuracy of MR in the evaluation of the glenoid labrum and rotator cuff tendon.
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