多层螺旋CT血管造影在颅内动静脉畸形诊断中的价值

Value of MSCTA for diagnosing intracranial arteriovenous malformations

目的评价多层螺旋CT血管造影(MSCTA)对脑动静脉畸形(AVM)的诊断价值。方法 62例均于发病后1周以内完成血管造影检查,其中40例先行MSCTA检查后行数字减影血管造影术(DSA);22例先行DSA检查后行MSCTA检查。以手术或者DSA结果为金标准,依照WHO的S-M分级标准作出AVM的5种分级。对比观察MSCTA与DSA在AVM诊断中的不同作用。结果 MSCTA与DSA都能清晰显示AVM的引流血管及其与邻近血管和骨性组织间的解剖关系,MSCTA区分AVM高危组比DSA更有意义。结论 MSCTA优于DSA,可清晰显示脑动静脉畸形、血管钙化等细节情况,对于脑动静脉畸形的诊断及治疗有重要意义。

Objective To evaluate the value of multi-slice spiral CT angiography（MSCTA） in the diagnosis of cerebral arteriovenous malformation（AVM）. Methods 62 patients with suspected cerebral AVM were performed MSCTA within 1 week of disease onset,among them,40 cases were firstly performed MSCTA,then conducted digital subtraction angiography（DSA）, while other 22 cases were firstly performed DSA, then conducted MSCTA. Operation or DSA results were taken as the golden standard. 5 kinds of classification for AVM were carried out according to the S-M classification criteria by WHO. The different roles of MSCTA and DSA in the diagnosis of AVM were compara tively observed. Results Both MSCTA and DSA clearly displayed the draining blood vessels and their anatomic rela- tionship with the adjacent blood vessels and bony tissues of AVM. MSCTA had more significance in differentiating the high risk AVM than DSA. Conclusion MSCTA is superior to DSA,which could clearly display the details of cer- ebral AVM with the important significance to the diagnosis and treatment of cerebral AVM.