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脑梗塞的原因在于脑血管被血流带来的栓子或因脑动脉硬化所形成的血栓堵塞脑血管造成血流中断,局部脑组织因缺血,缺氧而坏死出现相应的功能障碍而成。虽然二者的原因不尽相同,但造成血流中断则是共同的病变。 脑梗塞在经颅多普勒(TCD)的探测下应有血流中断的信号:即受累血管的多普勒信号缺如:受累血管多普勒信号缺如伴侧枝血流信号,而健侧同名血管的多普勒信号正常。但我们在实际上观察脑梗塞病人并非都有血流中断信号。
Cerebral infarction is due to cerebral blood vessels caused by emboli or blood clots caused by cerebral arteriosclerosis caused by clogging of blood vessels caused by cerebral blood flow interruption of local brain tissue due to ischemia, hypoxia and necrosis appeared from the corresponding dysfunction . Although the reasons for the two are not the same, the interruption of blood flow is the common cause. Cerebral infarction in the transcranial Doppler (TCD) detection of blood flow should be interrupted signal: the affected vessels of the Doppler signal missing: the affected vascular Doppler signal with the absence of collateral flow signal, while the contralateral The same name vessel Doppler signal is normal. However, we do not always have a bloodstream disruption signal in actual observation of patients with cerebral infarction.