Objective: To explore the application value of CDUS, CTA and DSA in lower extremity artery disease diagnosis. Methods: 100 patients with lower extremities arteriopathy were examined under CDUS, CTA and DSA. Results The positive rates of diagnosis for thromboangitis obliterans (TAO), arteriosclerosis obliterans (ASO), aneurysm and pseudoaneurysm, acute artery embolism of the extremity (AAEE) and arteriovenous fistula (AVF) under CDUS, CTA and DSA examination respectively were: 100%, 100%, 100%; 95.2%, 97.6%, 100%; 100%, 100%, 91.6%; 87.5%, 100%, 100%; 83.3%, 83.3%, 100%. Conclusion: CDUS is non-invasive and it can give a comprehensive observation of the artery lumens, vessel walls and the blood stream; CTA can display changes of peripheral vessel walls and lumens clearly; DSA can show accurate degrees of vessel diseases, location, collateral circulation and arteriola. Lower extremity arteriopathy can be diagnosed accurately under the combination of these methods which are of great importance to guide the clinical treatment.
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