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动态敏感增强MRI(DSC-MRI)近来用于脑梗塞和脑肿瘤的早期发现和定性。大量对比剂通过血管内系统时将造成局部磁敏感效应而引起一过性信号下降,灌注期信号下降的程度与血中对比剂浓度和血容量成直接比例关系。一过性信号下降与时间关系曲线图可用来计算组织微血管(毛细血管水平)的动态血容量图。作者的目的是评估肝血容量(HBV)图在经导管肝动脉栓塞术(TACE)后检测肝肿瘤灌注的作用。12例病人中男5例,女7例,平均
Dynamic Sensitive Enhancement MRI (DSC-MRI) has recently been used for the early detection and characterization of cerebral infarction and brain tumors. A large number of contrast agents through the intravascular system will cause local magnetosensitive effect caused by a transient signal decline, the degree of perfusion signal decline and blood contrast agent concentration and blood volume is directly proportional relationship. A transient signal drop versus time curve can be used to calculate the dynamic blood volume map of tissue microvessels (capillary level). The aim of the authors was to assess the effect of hepatic blood volume (HBV) maps on hepatic tumor perfusion after transcatheter arterial chemoembolization (TACE). Among the 12 patients, 5 were males and 7 were females, on average