Adult heartworms appear as double-lined hyperechoic structures within the heart or pulmonary arteries.
2.
Ultrasound may show obliteration of hepatic veins, thrombosis or stenosis, spiderweb vessels, large collateral vessels, or a hyperechoic cord replacing a normal vein.
3.
Liver haemangiomas are typically hyperechoic on single-photon emission computed tomography ( SPECT ) using autologous labelled Red Blood Cells ( RBC ) with Tc-99m is diagnostic.
4.
Horses with proximal enteritis usually have an intestinal diameter that is narrower, but wall thickness is often greater than 6mm, containing a hyperechoic or anechoic fluid, with normal, increased, or decreased peristalsis.
5.
Transvaginal ultrasonography showing a perforated copper IUD as a hyperechoic ( rendered as bright ) line at right, 3 centimeters away from the uterus at left . The IUD is surrounded by a hypoechoic ( dark ) foreign-body granuloma.
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