摘要
目的 :探讨头颅CT平扫出现大脑中动脉高密度征的意义。方法 :对 1185例头颅平扫片进行分析 ,观察大脑中动脉高密度征出现情况 ,并对部分病例行经颅多普勒 (TCD)检查。结果 :平扫CT发现大脑中动脉高密度征者 892例 ,占75 .3%。缺血性脑梗塞者仅 18例 ,占 2 %。无其它阳性征象者 5 4 2例 ,其中 114例进行TCD检查。 4 0岁以下者 5 6例 ,仅有 2例发现脑动脉硬化频谱 ,4 0岁以上者 5 8例中有 2 0例出现脑动脉硬化频谱 ,但无一例发现脑动脉闭塞、血栓现象。结论
Objective:To explore the value of high density sign of middle cerebral artery in CT plain scan.Methods:To analyze 1185 cases CT plain scan and observe the circs of high density sign of middle cerebra artery.Some cases were examined by TCD.Results:CT plain scan shown high density sign of middle cerebra artery in 892 cases (75. 3%). Cerebral infarction were only in 18 cases (2%). There were 542 cases that had not positive sign. 114 cases of them were examined by TCD. 56 cases were under 40 years old.Only 2 cases presented cerebral arteriosclerosis.The 20 cases in 58 cases above 40 years old presented cerebral arteriosclerosis. But there had not the phenomena of cerebral artery obstruction or thrombus.Conclusion:The high density sign of middle cerebral artery in CT plain scan is normal representation.
出处
《医学影像学杂志》
2003年第9期636-638,共3页
Journal of Medical Imaging
关键词
高密度征
脑梗塞
动脉硬化
体层摄影术
X线计算机
High density sign
Cerebral infarction
Arteriosclerosis
Tomograpyh,X ay Computed
