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Initial exploration of clinical value fordiagnosing intracranial aneurysms with nulti-slice helical CT threedinensional angiography
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- Author:
- No author available
- Journal Title:
- CHINESE JOURNAL OF RADIOLOGY
- Issue:
- 10
- DOI:
- 10.3760/j.issn:1005-1201.2001.10.008
- Key Word:
- 体层摄影术,X线计算机;脑动脉瘤;血管造影术,数字减影
Abstract： 目的探讨多层面螺旋CT三维血管造影(3D-MSCTA)作为脑动脉瘤首选诊断方法的临床价值.方法23例疑诊脑动脉瘤病例(其中13例有蛛网膜下腔出血),先后行3D-MSCTA、数字减影血管造影(DSA)和手术治疗.Toshiba多层面螺旋CT-AQUILION采集原始数据,扫描速度0.5s/每转,厚1.0 mm,螺距3.0/5.0 mm;对比剂安其格纳芬:1.0～2.0 ml/kg体重,注射速度:2.5～3.0 ml/s,延迟时间:15～23 s;SGI 02图像后处理工作站,后处理软件为:ALATOVTEW版本1.21;采用遮盖容积重建(SVR)、最大密度投影(MIP)和CT仿真内窥镜(Fly-through)3种后处理技术.所得图像分别由3位放射科医生和2位脑外科医生评价.结果3D-MSCTA检出动脉瘤25个,显示瘤体、瘤颈、载瘤动脉和与周围血管及颅骨的关系清晰、确切.DSA检出动脉瘤22个,漏检1个前交通动脉瘤和2个左中动脉瘤.23例病人中16例接受手术治疗,3D-MSCTA诊断与术后诊断一致.瘤体最大直径14.0 mm,最小直径1.7 mm,与DSA测量结果经t检验无显著性差异(t=1.46,P＞0.05).结论3D-MSCTA检出脑动脉瘤敏感性高、快速、无创,可以作为诊断脑动脉瘤的首选影像学方法.
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