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本文就常见脑血管病——脑出血、蛛网膜下腔出血、脑梗塞的CT 影像特点、诊断价值,易致误诊原因及鉴别诊断等予以综述。一、脑出血CT 所见依出血程度和时间而不同。新鲜脑出血可见以下四点:(1)血肿本身呈高X 线吸收区:(2)血肿周围脑水肿呈低X 线吸收区;(3)血肿及其周围脑水肿所致的块状效果(mass effect);(4)脑脊液循环障碍继发脑积水、脑室扩大。急性期脑血肿常呈境界鲜明、边缘不规
This article is to common cerebrovascular disease - cerebral hemorrhage, subarachnoid hemorrhage, CT image characteristics of cerebral infarction, diagnostic value, easy to cause misdiagnosis and differential diagnosis were reviewed. First, cerebral hemorrhage CT seen by the degree of bleeding and time and different. Fresh cerebral hemorrhage can be seen the following four points: (1) hematoma itself was high X-ray absorption area: (2) hematoma was low X-ray absorption zone around brain edema; (3) hematoma and surrounding brain edema caused by massive effect mass effect); (4) Cerebrospinal fluid circulation disorder secondary to hydrocephalus, ventricular enlargement. Acute cerebral hemorrhage often sharp, irregular edge