多层螺旋CT双期脑血管成像在AVM诊断中的临床应用和价值  

Clinical Application and Value of Dual_phase Multislice CT Anglography Scans in the Diagnosis of Cerebral Arteriovenous Malformation

作　　者：朱力平[1] 唐健[1] 姜建威[1] 周建宏[1] 

机构地区：[1]江苏省无锡市第三人民医院,214041

出　　处：《中国微循环》2004年第6期400-402,i002,共4页Journal of Chinese Microcirculation

摘　　要：目的探讨MSCT双期扫描脑血管成像CTA在AVM诊断中的临床应用和价值。方法观测12例经手术或DSA证实的AVM在MSCT动脉期3DCT和静脉期3DCT的表现。动脉期是在注射造影剂后13～18s平均15s后开始扫描 ,静脉期是在注射造影剂后40s后开始扫描 ,并且对各期进行脑血管CTA重建 ,包括MIP、SSD、VR等。结果动脉期CTA(MIP、VR)能较好地显示AVM的供血动脉、瘤体及部分早期引流静脉。静脉期3D -CTA显示了AVM的扩张的引流静脉、瘤体。通过动脉期3D -CTA及静脉期3D -CTA检查能较好地区别供血动脉和引流静脉 ,弥补了单期 (动脉期或静脉期 )扫描的不足。结论MSCT双期扫描脑血管成像CTA能较好地显示AVM的供血动脉、瘤体、引流静脉并能较好地区分它们 ,为AVM的手术或介入治疗提供了有价值的信息。Objective To evaluate the clinical application and value of dual_phase multislice CT angiograˉphy(MSCTA)scans in the diagnosis of cerebral arteriovenous malformation(AVM).Methods The arterial phase and venous phase3DCTappearance was observed in12cases of cerebral AVMproved by operation or DSA.Arterial phase and venous phase scans began at13～l8s(mean l5s)and40s after contrast injection.Source images of all phases were reconstructed with MIP,SSD and VR,etc.Results Arterial phase CTA(MIP,VR)displayed well AVM's affording arteria,body and part of early draining vein,and venous phase3D-CTA displayed AVM's exˉpanded draining vein and body.AVM's affording arteria and draining vein could be distinguished by arterial phase3D-CTA and venous phase3D-CTA,which made up the shortage of single phase(arterial or venous phase)scan.Conclusions Dual_phase MSCTA could display well AVM's affording arteria,body and draining vein,disˉtinguish them well and provide valuable information for operation or interventional therapy of AVM.

关 键 词：颅内动静脉畸形 断层摄影术 X线计算机 血管造影术 

分 类 号：R814.43[医药卫生—影像医学与核医学] R743.4[医药卫生—放射医学]