改良型颅外段颈动脉多层螺旋CT血管造影的扫描技术及临床应用  

Modified Multi-slice Spiral CT Angiography of Extracranial Carotid Artery:The Technique and Its Clinical Application

作　　者：伍建军[1] 晁明[1] 张广强[1] 徐风峰[1] 

机构地区：[1]浙江大学医学院附属第二医院放射科,浙江杭州310009

出　　处：《实用放射学杂志》2008年第10期1410-1413,1420,共5页Journal of Practical Radiology

摘　　要：目的探讨一种改良型颅外段颈动脉多层螺旋CT血管造影的扫描技术及其临床应用价值。方法对152例患者经股静脉注射造影剂、自头侧向尾侧扫描行颅外段颈动脉多层螺旋CT血管造影(MSCTA)获得颈动脉图像用以评估颅外段颈动脉各段的成像质量及病变检出情况,并在小样本内与数字减影血管造影(DSA)对照。结果(1)152例中仅见4例颈内静脉显影,颈内静脉显示率为2.63%。(2)改良型颈动脉MSCTA中颈总动脉起始段、颈总动脉中段、颈动脉分叉部、颈内动脉窦部及颈内动脉颈段最佳显示率分别为97.69%(297/304),97.69%(297/304),97.69%(297/304),95.62%(284/297)和97.64%(290/297),小样本内与DSA比较,中、重度狭窄程度判断结果一致。结论改良型颈动脉MSCTA可以更好地全程显示颅外段颈动脉,克服颈静脉的干扰,提高颅外段颈动脉疾患的无创性诊断水平。Objective To study the technique of modified multi-slice spiral CT aniography（MSCTA） for displaying the whole length of the carotid arteries and the origin of the vertebral arteries,and to evaluate its clinical value.Methods A total of 152 patients underwent modified MSCTA of extracranial carotid artery which scanned from skull base to aortic arch with contrast medium injected from the femoral vein, the image quality and the detection of lesions were assessed in comparison with that of DSA in a few of cases. Results （1） The jugular vein was displayed in 4 cases, only accounting for 2.63%. （2） The carotid segments including the proximal common carotid artery（CCA）, the middle CCA, the carotid bifurcation, the internal carotid artery（ICA） bulb and the distal ICA could be visualized adequately by MSCTA,the showing rates were 97.69%,97.69%,97.69%,95.62% and 97.64%,respectively. Furthermore, moderate or severe stenosis detected by MSCTA in 17 cases was closely corresponding with the results of DSA. Conclusion Modified MSCTA of extracranial carotid artery can display the whole length of extracranial carotid artery and the origin of the vertebral arteries satisfactorily without the interference of the jugular, subclavian and innominate veins, and can improve its clinical application.

关 键 词：颈动脉 体层摄影术 X线计算机 血管造影 数字减影血管造影 

分 类 号：R322.121[医药卫生—人体解剖和组织胚胎学] R814.42[医药卫生—基础医学]