Levon Nazarian

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OBJECTIVE The purpose of this study was to compare the diagnostic accuracy of MRI, MR arthrography, and ultrasound for the diagnosis of rotator cuff tears through a meta-analysis of the studies in the literature. MATERIALS AND METHODS Articles reporting the sensitivities and specificities of MRI, MR arthrography, or ultrasound for the diagnosis of rotator(More)
Continued development of CT and MRI techniques has allowed these modalities to detect most hepatic vascular diseases, often obviating more invasive tests. In this article, the techniques for hepatic vascular diagnosis are reviewed, with emphasis on spiral CT and two-dimensional MRI techniques, and then the major vascular diseases on which these two(More)
OBJECTIVE Worldwide, the use of sonography for the evaluation of the musculoskeletal system has been growing. However, radiologists in North America have been relatively slow to incorporate musculoskeletal sonography into their practices. The purpose of this article is to show the advantages of musculoskeletal sonography. CONCLUSION Musculoskeletal(More)
PURPOSE To determine the sensitivity and specificity of ultrasonography (US) in the detection of lateral epicondylitis and identify the US findings that are most strongly associated with symptoms. MATERIALS AND METHODS Internal review board approval was obtained for retrospective review of the patient images, and the need for informed consent was waived.(More)
BACKGROUND Dislocation or subluxation of the peroneal tendons out of the peroneal groove under a torn or avulsed superior peroneal retinaculum has been well described. We identified a new subgroup of patients with intrasheath subluxation of these tendons within the peroneal groove and with an otherwise intact retinaculum. METHODS The cases of fifty-seven(More)
PURPOSE To determine whether dynamic ultrasonography (US) can reveal abnormalities of the anterior band of the ulnar collateral ligament (UCL) of the elbow in asymptomatic major league professional baseball players. MATERIALS AND METHODS US was performed in 26 asymptomatic major league professional baseball pitchers before spring training. Images were(More)
PURPOSE Over the past two decades, musculoskeletal (MSK) ultrasound has emerged as an effective means of diagnosing MSK pathologies. However, some insurance providers have expressed concern about increased MSK ultrasound utilization, possibly facilitated by the low cost and ready availability of ultrasound technology. The purpose of this study was to(More)
OBJECTIVE Spatial compound sonography is a method that obtains sonographic information from several different angles of insonation and combines them to produce a single image. By reducing speckle and improving definition of tissue planes, this method can potentially improve image quality in musculoskeletal sonography. The purpose of our study was to compare(More)
OBJECTIVE Peroneal tendon subluxation is a major cause of posttraumatic lateral ankle pain. Because peroneal subluxation often occurs only when the foot is dorsiflexed and everted, findings on static imaging studies may appear to be normal. We therefore evaluated the effectiveness of sonography in revealing peroneal tendon subluxation in patients performing(More)
To compare the results of sonographic (US) and magnetic resonance (MR) imaging in detecting pathology of the posterior tibial tendon (PTT) in patients with PTT dysfunction. Twenty-two ankles that were clinically suspected by the orthopedic surgeon to have PTT dysfunction were evaluated with US (10 MHz linear-array transducer) and 1.5 T MR examinations(More)