Angiography and UltrasonographyThese kinds of imaging are seldom utilized in the diagnosis of canine heartworm disease outside of referral practices and teaching associations. Angiography is a technique which allows visualization of blood vessels in your system by taking radiographs within minutes after injecting a contrast material (dye) into those blood vessels. In canine heartworm disease, angiography is used to study changes to the pulmonary blood vessels. Worms may be visualized on the angiogram as filing flaws. Ultrasonography (echocardiography) has been utilized to appraise enlargement of the heart chamber and also to search for the existence of heartworms in the ideal ventricle or primary pulmonary artery.Necropsy (examination after death)Although necropsy is probably the most definitive diagnostic evaluation, it's estimated that it never reaches that point. Heartworms are often found in the ideal ventricle of the heart or at the significant pulmonary arteries, at times in its farthest branches. Sometimes heartworms might be seen in organs aside from the heart and lungs but such infections are infrequent.
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