How is dynamic imaging useful in Ultrasound? One of the unique advantages US provides is the ability to image dynamically, resulting in real-time functional information regarding certain pathologies, which may only be confirmed upon performing provocative movements during sonographic examination. Several circumstances in which dynamic evaluation is crucial include, but are not limited to: subacromial …
What is the accuracy of Ultrasound in the diagnosis of rotator cuff tears? The diagnostic accuracy of US in evaluation of both partial- and full-thickness rotator cuff tears is comparable with MRI and highly correlates with arthroscopy, with a sensitivity and specificity of up to 95% when utilized by experienced operators.
Sonographic appearance of rotator cuff tendon pathology on an Ultrasound The spectrum of tendon pathology on US includes tendinosis, partial tear, full-thickness tear, and tenosynovitis, not just in the rotator cuff of the shoulder joint but in other sites as well. In the following examples, pathology of the supraspinatus tendon will be discussed. Tendinosis indicates …
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What is the appearance of a hematoma on an Ultrasound? Hematomas are usually spherical or ovoid within the abdomen, and lentiform within the pleural space or abdominal wall. They generally decrease in size with time, and usually have irregular walls. Hematomas contain a variable amount of internal echoes during the first month, and then gradually …
When should a soft tissue mass detected on Ultrasound be referred for MRI? There are multiple indications for obtaining an MRI for further characterization of a soft tissue mass detected on US, including, but not limited to, those instances in which the lesion cannot be definitively diagnosed as a ganglion cyst or lipoma; does not …
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What are the Ultrasound findings of Giant cell tumors of the tendon sheath? Giant cell tumors of the tendon sheath, or localized pigmented villonodular synovitis, has a characteristic appearance and location on Ultrasound. This lesion is most often associated with the flexor tendon sheath of the finger and is at least partially in close contact …
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What are the Ultrasound findings of Peripheral Nerve Sheath Tumors? When a solid mass is found to be contiguous with a peripheral nerve, one can confidently offer the diagnosis of a peripheral nerve sheath tumor. Given the high resolution of an Ultrasound, it is often used to definitively demonstrate peripheral nerve continuity with a mass. …
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