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Digital subtraction angiography (DSA) was performed on 56 patients with hepatic diseases and evaluated for its imaging quality.Intra-venous DSA (IVDSA) was useful for diagnosing of hypervascular tumor lesions as hepatocellular carcinoma or liver hemangioma, especially of hepatocellular carcinoma larger than 5.0cm in diameter. IVDSA is a relatively noninvasive procedure and effective method as examination for outpatients or observation after transcatheter arterial embolization therapy.On the other hand, intra-arterial DSA (IADSA) was found to be available especially for diagnosis of lesions in portal venous system, because the same image quality as conventional angiography was obtained using small amount of contrast medium.DSA image was disturbed by respiratory movement, body motion or bowel gas, and restricted by sites or sizes of lesions and their vascularity.
財団法人日本消化器病学会の論文