The Utility of Contrast-Enhanced MRI in Diagnosis of Muscle Injuries Occult to Conventional MRI

Abstract
Our goal was to define the utility of contrast-enhanced MRI in the diagnosis of occult muscle injuries on T2 and STIR sequences. We retrospectively reviewed the pre- and postcontrast MR studies of four professional athletes with a clinical diagnosis of suspected muscle injuries. The four cases demonstrated muscle strain injuries not visualized on the conventional T2 and STIR sequences but visualized on the postcontrast MR studies as areas of localized enhancement. We recommend the intravenous administration of gadolinium in the setting of clinically suspected muscle injuries not visualized on T2 and STIR sequences.

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