Robert E. Epstein

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An association between the morphology of the acromion and the occurrence of rotator cuff tear (RCT) has been suggested by findings at both pathologic examination and routine radiography. As a tomographic technique, magnetic resonance (MR) assessment of acromial shape may be more accurate than routine radiography. The authors studied acromial morphology on(More)
PURPOSE Prostate cancer foci have a characteristic appearance on endorectal magnetic resonance imaging (MRI) which might be useful for prostate cancer detection. In this pilot study the ability of endorectal MRI to detect prostate cancer foci prospectively in men at risk for a malignant prostatic neoplasm is assessed. MATERIALS AND METHODS Endorectal MRI(More)
PURPOSE To determine the clinical significance of fluid in the acromioclavicular (AC) joint. MATERIALS AND METHODS A total of 108 patients with clinical shoulder problems and 16 volunteers underwent MR imaging with a 1.5-T unit. Coronal T1- and T2-weighted images were evaluated for the presence of AC joint fluid, glenohumeral joint fluid, and AC joint(More)
The dog, a convenient and relatively large animal whose size permits repetitive blood and marrow sampling, marrow biopsy, and mechanical apheresis, would be a suitable experimental model for the study of in vivo megakaryocytopoiesis. A monoclonal antibody to a 140-kd dog platelet membrane protein has been developed that reacts with canine megakaryocytes.(More)
PURPOSE To determine interobserver and intraobserver variation in the interpretation of magnetic resonance (MR) images in rotator cuff disorders. MATERIALS AND METHODS MR images of the shoulder in 97 patients were retrospectively reviewed twice, with a 3-week interval. Surgical findings indicated a full-thickness tear in 29 patients, grade 1 impingement(More)
The use of MR imaging in the area of the wrist has lagged due to the technical challenges posed by the small size of the structures of the wrist. After a careful history, physical examination, and plain films, MR imaging is a powerful next imaging study for solving diagnostic problems involving this complex region. The increasing ability of MR imaging to(More)
PURPOSE To investigate the clinical importance of glenohumeral joint (GHJ) fluid. MATERIALS AND METHODS The amount of GHJ fluid in 17 volunteers and 208 consecutive patients was graded at magnetic resonance imaging with T2-weighted fat-suppressed coronal oblique images by two blinded observers. Thorough historical data and physical examination results(More)
Stress injury to the distal humerus has been reported as a cause of chronic arm pain among competitive tennis players. As the serve is technically similar to an overhead throwing motion, it is conceivable that this injury could occur in other overhead athletes. Overuse injuries, including rotator cuff tears, ulnar collateral ligament injuries, and joint(More)