双能量CT对脑动静脉畸形相关出血危险因素诊断价值

Diagnostic value of dual-energy CT in cerebral arteriovenous malformation

目的:探讨双能量CT在颅内动静脉畸形中的诊断价值。方法:回顾性分析64例颅内动静脉畸形(AVM)患者的双能量CT影像资料,结合患者的临床资料分析出血与非出血患者的双能量CT诊断结果的差异。采用Cox回归模型分析出血患者的相关危险因素。结果:单因素卡方分析表明脑AVM出血与其生长部位、大小、引流静脉类型、数目、供血动脉类型、是否合并动脉瘤相关(χ2值分别为0.0746、10.397、7.729、8.592、7.801、6.178,P<0.05)。利用Cox风险回归模型筛选相关危险因素为生长部位、引流静脉类型、是否合并动脉瘤,相对危险度分别为1.418、4.106和5.398。结论:脑AVM出血密切相关的危险因素是AVM生长部位、引流静脉类型、是否合并动脉瘤。应用双能量CT在颅内动静畸形中诊断中具有较好的诊断价值。

Objective： To explore the value of dual-energy CT in diagnosis of cerebral arteriovenous malformation （cAVM） . Methods： 64 cAVM case records were retrospectively reviewed. Referring to clinical information, a comparative a nalysis was made on images of dual-CT between the hemorrhage group and non-hemorrhage group. The relative risk factors of hemorrhage were analyzed with the Cox regression Model. Results： Univariate analysis suggested that independent risk factors included location of cAVM, size, the type and number of draining veins, the type of feeding arteries and whether complicated with aneurysms （ χ2= 0. 0746,10. 397,7. 729,8. 592,7. 801,6. 178, respectively; P〈0. 05）. Multivariate analy sis with the Cox-regression model suggested that location of cAVM,the type of draining veins and aneurysms were the risk factors, relative risk values were 1. 148,4. 106 and 5. 398. Conclusion：DuaFenergy CT has very important diagnostic value for cAVM disease.