Utility of pre- and post-MR arthrogram imaging of the shoulder: effect on patient care

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Abstract
Purpose:MR arthrogram imaging of the shoulder is considered more accurate in assessing shoulder pathology than conventional MR imaging. Arthrography is a minimally invasive procedure. However most patients prefer to have conventional MR imaging rather than MR arthrogram imaging. We report the benefit of assessing pre arthrogram conventional MR imaging to determine whether an MR arthrogram is needed for further evaluation.Methods and materials:One hundred consecutive conventional shoulder MR and MR arthrography exams performed on the same patients were reviewed retrospectively by independent reading of two musculoskeletal radiologists. Both conventional MR and MR arthrogram exams were performed on each patient on the same day. Conventional MR and MR arthrogram exams were assessed for labral tears and supraspinatus tendon tears. All patients went on to arthroscopy.Results:Of these one hundred patients, forty-three had SLAP (superior labral anterior to posterior) tears , twenty-eight had posterior labral tea...

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