How is vascular flow assessed with Ultrasound? Flow within vessels is detected and displayed with the use of color and spectral Doppler imaging. Color Doppler US with pulsed spectral display allows for the presence or absence of flow to be displayed (as a color) as well as the direction, velocity, and character of the blood …
Most common indications for vascular ultrasound Vascular ultrasound is commonly used to evaluate the following: • Extremity deep venous thrombosis. • Carotid artery stenosis. • Abdominal aortic aneurysm. • Renal artery stenosis. • Hepatic vasculature in the setting of cirrhosis and after transjugular intrahepatic portosystemic shunt (TIPS) placement. • Pseudoaneurysm and arteriovenous fistula.
How is carpal tunnel syndrome diagnosed on Ultrasound? There are a variety of ways to evaluate for carpal tunnel syndrome with US. One of the most accurate methods is to calculate the difference between the cross-sectional area of the median nerve at the carpal tunnel and at the level of the pronator quadratus muscle. The …
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What are some common artifacts seen in musculoskeletal Ultrasound? It is important to be aware of common artifacts that are often seen with musculoskeletal US, not only to avoid misinterpreting a finding, but also because artifacts may provide valuable diagnostic clues about underlying pathology. Posterior acoustic shadowing is present when the ultrasound beam is refracted, …
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What is the ultrasound findings of musculoskeletal infection? Infection of the superficial soft tissues, or cellulitis, has a variety of sonographic appearances depending on the time course of imaging. In the acute setting, cellulitis appears as swollen, hyperechoic subcutaneous tissue with hyperemia on color Doppler imaging. As time goes on, cellulitis may appear hypoechoic with …
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What is the ultrasound findings of calcific tendinosis? Calcific tendinopathy, or calcific tendinosis, is an extremely painful condition caused by the deposition of calcium hydroxyapatite within or around a tendon. Calcium hydroxyapatite on radiographs appears as amorphous calcific densities. On Ultrasound, calcium hydroxyapatite appears echogenic. It may be either amorphous or well defined, with or …
What is the Ultrasound findings of ligament pathology? Normal ligaments should appear hyperechoic with compact fibrillar fibers. A sprain or partial-thickness tear of a ligament appears as hypoechoic swelling and heterogeneity of the ligament, but without complete ligament fiber disruption. An acute full-thickness tear is characterized by discontinuity or nonvisualization of the ligament. In the …