经颅多普勒超声检查与核磁共振有什么区别 吴玮 吉林省脑科医院 скачать в хорошем качестве

经颅多普勒超声检查与核磁共振有什么区别 吴玮 吉林省脑科医院

经颅多普勒超声检查与核磁共振有什么区别 吴玮 吉林省脑科医院 经颅多普勒超声看的是血流速度及方向来间接判断血管的情况，核磁共振是大脑血管成像，看到的是血管腔内的一个实时的状态，经颅多普勒是没有办法看到，它只能根据流速频谱来看来判断，有一些远端的病变或者说椎动脉的有一些病变，超声TCD看不出来的，需要核磁进行一些补充的说明，或者说比比TCD要准确得很多；蛛网膜下腔出血是一种常见的脑血管病，血管痉挛是蛛网膜下腔出血的严重并发症，经颅多普勒超声能够相对准确地探测血管痉挛的发生，因此作为蛛网膜下腔出血不可缺少的一个监测工具，它是没有什么辐射的，超声波在自然环境中也是存在的，经颅多普勒也是超声的一种，同样没有什么辐射。 What is the difference between TCD and MRI Transcranial Doppler ultrasound can indirectly judge the condition of blood vessels by the velocity and direction of blood flow, MRI is cerebral angiography, What we see is a real-time state in the lumen, Transcranial Doppler can't see, It can only be seen from the velocity spectrum, There are some distal lesions or vertebral artery lesions, It can't be seen by TCD, We need some additional instructions from NMR, Or much more accurate than TCD; Subarachnoid hemorrhage is a common cerebrovascular disease, Vasospasm is a serious complication of subarachnoid hemorrhage, TCD can detect the occurrence of vasospasm relatively accurately, Therefore, as an indispensable monitoring tool for subarachnoid hemorrhage, It has no radiation, Ultrasound also exists in the natural environment, Transcranial Doppler is also a kind of ultrasound, There is also no radiation.