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脑血管造影证实:蛛网膜下腔出血(SAH)后脑主干血管可发生痉挛,而末梢血管发生者较少,但具体所占比例尚未确定。1982年以来,经颅超声多普勒(TCD)作为一种非创伤性检查方法,可容易地测量脑主干动脉血液流速和监测血管痉挛情况。但由于某些技术以及血管走行等方面的原因,TCD只能测量脑主干血管内的血液流速。这些主干血管包括:颈内动脉(ICA)颅内段,大脑中动脉(MCA)主干和水平段,大脑前动脉(ACA)水平段,大脑后动脉(PCA)近段,椎动脉和基底动脉;TCD不能测量的末梢血管包括:ACA纵行段,MCA裂段,PCA向后走行段。基于此点,作者选择了68例SAH病人的136张脑血管造影片来分析蛛网膜下腔出血后血管痉挛分布情况。
Cerebral angiography confirmed that: subarachnoid hemorrhage (SAH) after cerebral vasospasm may occur, while the occurrence of peripheral blood vessels less, but the specific proportion has not yet been determined. Since 1982, transcranial ultrasound Doppler (TCD) as a non-invasive method can easily measure the main arterial blood flow and monitor vasospasm. However, TCD can only measure the blood flow velocity in the main blood vessels of the brain due to some techniques and reasons such as the running of blood vessels. The main vessels include intracranial segments of the internal carotid artery (ICA), trunk and horizontal segments of the middle cerebral artery (MCA), horizontal segments of the anterior cerebral artery (ACA), proximal segments of the posterior cerebral artery (PCA), vertebral and basilar arteries; TCD can not measure the peripheral blood vessels include: ACA longitudinal section, MCA cracked section, PCA backward running section. Based on this, the authors selected 136 cerebral angiograms from 68 patients with SAH to analyze the distribution of vasospasm following subarachnoid hemorrhage.