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目前,由于超声波及CT的应用,使肝肿瘤的诊断有了很大进展,对肝脏的一些较小病灶也能作出诊断。由于肿瘤的小血管显影不好,所以对这些小病灶行血管造影效果均不满意。过去的肝血管造影,是用血管收缩剂使营养肿瘤的血管完全收缩后再注入造影剂,这样往往阻碍造影剂进入肿瘤而使肿瘤显影不良。为克服这一缺点采用加压血管造影新方法,即迅速注入血管收缩剂后立即或同时开始注入造影剂,在血管开始收缩前到收缩后这一期间持续注入造影剂。
At present, due to the application of ultrasound and CT, the diagnosis of liver tumors has made great progress, and some minor lesions of the liver can also be diagnosed. Because the small blood vessels of the tumor are not well developed, the angiographic effects of these small lesions are not satisfactory. In the past, hepatic angiography was the use of vasoconstrictors to completely contract blood vessels of nutritional tumors and then inject contrast agents. This often hinders the contrast agent from entering the tumor and causes the tumor to develop poorly. In order to overcome this drawback, a new method of pressurized angiography is adopted. That is, immediately after or at the same time as the rapid infusion of the vasoconstrictor, contrast agent is injected, and the contrast agent is continuously injected before the blood vessel starts contracting and after the contraction.