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静脉注射造影剂后,左心室和全身动脉中的浓度很低,不能用常规 X 线技术得到可靠的显象。为了解左心室功能,目前主要依靠动脉穿刺和选择性心脏插管术。计算机技术的发展,使之可应用静脉注射一剂造影剂后对左心室和主要动脉进行放射学检查。本文目的是显示数字减影血管造影术能提供左心室的诊断性图形,以选择有可能经外科纠治的病人。
After intravenous injection of contrast medium, the concentration in the left ventricle and systemic arteries is very low and can not be reliably visualized using conventional X-ray techniques. To understand left ventricular function, the current mainly rely on arterial puncture and selective cardiac catheterization. The development of computer technology makes it possible to perform radiological examinations of the left ventricle and major arteries after intravenous injection of a contrast agent. The purpose of this article is to show that digital subtraction angiography can provide a diagnostic picture of the left ventricle to select patients who may be surgically treated.