CO2—DSA的临床应用研究

目的：探索二氧化碳气体作为血管造影剂的临床应用效果。材料方法：对１６例患者行二氧化碳数字减影血管造影（ＣＯ２－ＤＳＡ）。其中肝动脉造影８例，腹主动脉造影１例，股动脉造影２例，直接门静脉造影３例，肾静脉造影２例，并与同一患者碘剂造影比较。结果：在８例肝肿瘤中，ＣＯ２－ＤＳＡ显示肝动脉－门静脉瘘（ＡＰＦ）６例（６／８），而碘剂显示１例（１／８）。ＣＯ２－ＤＳＡ显示肝内小动脉分支及肿瘤染色不如碘造影剂。但腹主动脉造影、股动脉造影和直接门静脉造影图像较满意，且副作用小。结论：ＣＯ２是一种安全的血管造影剂。ＣＯ２－ＤＳＡ可得到准确、有价值的血管图像，且危险性小。它是显示肝ＡＰＦ的可靠方法

A Study on Clinical Appications of CO 2 DSA

Purpose: To investigate the clinical utility of carbon dioxide gas as a vascular contrast agent. Materials and Methods: Carbon dioxide digital subtraction angiography (CO 2 DSA) was performed in 16 patients with various disease. Hepatic arteriography was perfomed in 8 cases, abdominal aortography in 1 case, femoral arteriography in 2 cases, direct portography in 3 cases and renal venography in 2 cases. The image quality of CO 2 DSA was compared with that of iodinated contrast media DSA. Results: Arterioportal fistulaes (APF) were revealed by CO 2 DSA in 6 of 8 cases of hepatic tumor (6/8) and only one case (1/8) by conventional DSA. But CO 2 DSA was inferior to conventional angiography in visualizing small branches of hepatic artery and tumor stains. Image quality was satisfying in abdominal aortography, femoral arteriography, and direct portography. The side effets were minimal. Conclusion: CO 2 was a safe vascular contrast agent. CO 2 DSA could provide accurate, clinical useful vascular images with few risks. It was thought to be a reliable method in the diagnosis of A P fistula of liver.