中文摘要：

目的探讨64排螺旋CT血管成像（CTA）在脑动静脉畸形（AVM）术前评价的应用价值。方法 43例脑AVM术前均已完善CTA及数字减影血管造影（DSA）检查,参照Spetzler-Martin分级法,由放射科医师与神经外科医师共同阅片,以DSA为标准,应用CTA及DSA对其进行术前评价对比。结果 43例脑AVM均为单发;并发颅内出血急诊入院的25例（58%）。CTA与DSA对比,对脑AVM的分级结果一致,43例脑AVM中Ⅰ级2例（4%）,Ⅱ级5例（12%）,Ⅲ级21例（49%）,Ⅳ级11例（26%）,Ⅴ级4例（9%）。CTA与DSA对比,对脑AVM大小及引流静脉的检出结果一致,43例脑AVM中小型（〈3 cm）7例,中型（3～6 cm）30例,大型（〉6 cm）6例,引流静脉共检出71条。43例脑AVM中,应用DSA检出供血动脉共73条,敏感度和准确度均为100%,应用CTA检出供血动脉共65条,CTA对供血动脉的检出敏感度和准确度分别为89%、100%。结论应用CTA与DSA对脑AVM术前评价结果差异无统计学意义（P〉0.05）,CTA更为安全、方便,可作为首选方法。

英文摘要：

Objective To study the value of 64-row spiral CT augiography（CTA）in preoperative evaluation of brain arteriovenous malformation（AVM）. Methods Reference Spetzler-Martin classification method of 43 cases of brain AVM preoperative grading,preoperative both improve the CTA and DSA examination,read together by radiologists and neurosurgeons,standard in order to the DSA examination that contrast the CTA and DSA examination in preoperative evaluation of brain AVM. Results Forty-three cases of brain AVM were single;Complicated intracranial hemorrhage emergency admission of 25 cases（58%）. Make a same result with the CTA and DSA examination in brain AVM preoperative grading,43 cases of brain AVM Ⅰ level 2（4%）,Ⅱ level 5 cases（12%）,Ⅲ level 21 cases（49%）,Ⅳlevel 11 cases（26%）,Ⅴ level 4 cases（9%）. CTA and DSA,the size of cerebral AVM and venous drainage of the detection results,43 cases of cerebral AVM small to medium size（〈3 cm） in 7 cases,medium（3 ～6 cm）,30 cases of large（〉6 cm） 6 cases,venous drainage were checked out 71. Forty-three cases of cerebral AVM,the application of blood supply artery DSA detected a total of 73,the sensitivity and accuracy were 100%,application of CTA detected blood supply artery 65,CTA detection sensitivity and accuracy of the blood supply artery were 89%,100% respectively.Conclusion Application of CTA and DSA of cerebral AVM preoperative evaluation results no significant difference（P〉0.05）,the CTA is more safe and convenient that can be used as the preferred way.