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小脑是后颅窝最大的脑组织。然而,直到本世纪80年代人们才对小脑梗塞有所了解。由于CT和MRI能充分显示小脑病变,现在人们可以将区域性梗塞(包括小脑动脉的全区域及其分支各区域和交界区梗塞区别开来,这有助于推测缺血性梗塞的血管性机理。区域性梗塞是因血栓栓塞引起,心脏栓子最为常见,其次是动脉-动脉栓塞、椎动脉(VA)(主要是颅内段)或基底动脉(BA)粥样硬化和椎动脉剥离,从治疗方面看,其中椎动脉病变引起的动脉内栓塞值得重视。交界区或终未区梗塞可能是由血液动力学改变或小的栓塞引起。最为常见的原因是血管粥样化或血栓引起的椎动脉或基底动脉的闭塞;其次是高凝状态(如血小板增多症、红细胞增多症、DIC),椎基底动脉或其颅内血管粥样化引起的小的或终末(软膜)动脉病;全身低血压很罕见。评价颅内血液动力学的神经成像新方法(TCD、MRA、PET、SPECT)为进一步研究这些患者及其病变的自然病程和进一步确定各种治疗方案和血管重建措施提供了机会。
The cerebellum is the largest brain tissue in the posterior fossa. However, it was not until the 1980s that people knew about cerebellar infarction. Because CT and MRI can fully show cerebellar lesions, one can now distinguish between regional infarcts, including all regions of the cerebellar artery and its branches and junctional infarctions, which can be useful in inferring the vascular mechanisms of ischemic infarction Regional infarction was caused by thromboembolism, with the most common cardiac emboli, followed by arterial-arterial embolism, vertebral artery (VA) (mainly intracranial) or basilar artery (BA) atherosclerosis and vertebral artery dissection Treatment, in which vertebral artery lesions caused by intra-arterial embolism deserve attention.The junctional area or the final infarction may be caused by hemodynamic changes or small embolism caused by the most common cause of atherogenic or thrombotic vertebra Arterial or basilar occlusion; followed by hypercoagulable conditions (eg, thrombocythemia, polycythemia, DIC), small or terminal (soft-membrane) arterial disease caused by vertebrobasilar or intracranial atheroma; Systemic Hypotension is Rare .Neural Imaging Evaluation of Intracranial Hemodynamics (TCD, MRA, PET, SPECT) To further investigate the natural history of these patients and their pathologies and to further identify various treatment options And vascular reconstruction measures provide an opportunity.