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CT灌注成像(CTperfusionimaging)是功能成像方法之一,它可以从组织细胞水平和微循环水平来揭示人体组织器官的正常生理及病理解剖和病理生理的改变,对脑梗死的早期和脑肿瘤的诊断与鉴别诊断以及疗效评价等方面有重要的临床价值。1CT灌注成像及其基本原理1.1CT灌注成像的基本概念90年代初Miles等提出了CT灌注成像的概念,其基本的技术方法是将对比剂经静脉快速团注,同时对选定的层面进行快速动态CT扫描,可获得感兴趣区的时间密度曲线(time-densitycurve,TDC),该曲线反映的是对比剂在该器官
CT perfusion imaging (CT perfusion imaging) is one of the functional imaging methods, which can reveal the normal physiological and pathological anatomy and pathophysiology of human tissues and organs from the level of tissue cells and microcirculation, the diagnosis of early cerebral infarction and brain tumors And differential diagnosis and efficacy evaluation has important clinical value. 1CT perfusion imaging and its basic principles 1.1CT perfusion imaging of the basic concepts Miles early proposed the concept of CT perfusion imaging in the early 90s, the basic technical method is to contrast fast bolus through the vein, while the selected level fast Dynamic CT scans result in a time-density curve (TDC) of the region of interest, which reflects the contrast agent in the organ