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肝脏是机体重要的代谢器官.对门脉高压患者,若在术前了解肝的血液循环状态,将有助于选择适当的手术方式以取得较好的手术效果;药物代谢也会受肝血流量变化的影响.因此,准确地测定肝血流量对于了解肝脏的病理生理以及研究药物在肝内的代谢均有十分重要的意义.测定肝血流量的方法分类测定肝血流量的常用方法大致可分为两大类,即直接法和间接法.直接法包括:电磁流量计、热交换法以及激光-多普勒流速计等方法.间接法主要包括:清除技术、单次注射法、部分分布法、惰性气体洗出技术以及闪烁照相脾门静脉造影等方法.
The liver is an important metabolic organ of the body.For patients with portal hypertension, understanding of the liver blood circulation before surgery, will help to select the appropriate surgical approach to obtain better surgical results; drug metabolism will be affected by liver blood flow Therefore, the accurate determination of hepatic blood flow for the understanding of the pathophysiology of the liver and the study of drug metabolism in the liver have a very important significance.Determination of liver blood flow method classification Common method of measuring liver blood flow roughly divided For the two categories, namely direct method and indirect method.The direct method includes: electromagnetic flowmeter, heat exchange method and laser - Doppler velocimetry and other methods.Indirect methods include: removal technology, single injection method, partial distribution method , Inert gas washing technology and scintigraphy splenic portal vein angiography and other methods.