VCT对头颈部血管狭窄与闭塞的诊断价值

目的 探讨64排螺旋CT(VCT)头颈部血管成像对头颈部血管慢性狭窄性病变的临床诊断价值.资料与方法 对62例可疑头颈部血管慢性狭窄性病变的患者应用CT血管成像(CTA)技术行头颈动脉成像检查,观察两侧椎动脉(VA)、颈内动脉(ICA)以及大脑前动脉(ACA)、大脑中动脉(MCA)和大脑后动脉(PCA).对所有图像行曲面重组(CPR)、容积再现(VR)、最大密度投影(MIP)及多平面重组(MPR)处理.结果 62例中头颈部CTA未见异常19例,发现血管异常43例.其中VA狭窄18支,闭塞7支;ICA狭窄30支,闭塞7支;ACA和MCA狭窄11支,闭塞2支,PCA发育不良2支.烟雾病2例,脑内动静脉畸形2例.血管起源变异4例.结论 VCT头颈部血管成像能准确显示头颈部血管正常解剖与异常改变,二维与三维图像相结合对头颈部血管狭窄或闭塞诊断和治疗方案的制定具有指导意义.

The Evaluation of 64 Multislice Spiral CT Angiography in the Diagnosis of Cerebral and Carotid Artery Stenosis and Obliteration

Objective To explore the value of 64 multislice spiral CT Angiography(CTA) in diagnosis of cerebral and carotid artery stenosis and obliteration.Materials and Methods CTA of the cerebral and carotid artery were performed in 62 patients that suspected cerebral and carotid artery stenosis or obliteration.Vertebral artery(VA),internal carotid artery(ICA),anterior cerebral artery(ACA),middle cerebral artery(MCA),posterior cerebral artery(PCA)were individual observed.Two-dimensional and three-dimensional reformation were performed in all cases by means of curved multiplannar reformation(CPR),volume rendering(VR),maximum intensity projection(MIP),multiplanar reformation(MPR) respectively.Results Among the 62 cases,there were 19 normal cases and 43 abnormal cases.VA stenosis were found in 18 and obliterations were in 7,ICA stenosis were in 30 and obliterations were in 7,ACA and MCA stenosis were in 11,obliterations were in 2,PCA dysplasia were in 2.The origin variations of vessles were in 4 cases,etc.Conclusion VCT Angiography could clearly show the cerebral and carotid vessels.Combined two-dimensional with three-dimensional VCT Angiography is a useful and noninvasively method to identify cerebral and carotid artery stenosis and obliterations.