刘元早+王霖

[摘要] 目的 探讨64排三维CT血管造影（3D-CTA）和三维数字减影血管造影（3D-DSA）检查动脉瘤的长径和颈宽测量值的差异。 方法 回顾性分析2012年1月～2013年11月在川北医学院附属医院行3D-CTA和3D-DSA检查的动脉瘤患者的临床资料，比较两种检查方法动脉瘤的长径和颈宽的测量值差异。 结果 3D-CTA与3D-DSA上动脉瘤最大径均值分别为5.68、5.72 mm，差异无统计学意义（P=0.102）；3D-CTA与3D-DSA上颈宽测量均值分别为3.01、2.92 mm，差异有统计学意义（P＜0.01）。3D-CTA与3D-DSA上动脉瘤最大径与颈宽的测量值均有明显的相关性（r=0.993、0.975，P＜0.01）。 结论 3D-CTA是动脉瘤形态学特征描述的有效方法。

[关键词] 颅内动脉瘤；CT血管造影；数字减影血管造影；测量值

[中图分类号] R814.42[文献标识码] A[文章编号] 1674-4721（2014）05（c）-0115-03

Comparative study on size of intracranial aneurysm based on 3D-DSA and 3D-CTA

LIU Yuan-zao1，2 WANG Lin3▲

1.Department of Radiology,Affiliated Hospital of North Sichuan Medical College/Sichuan Province Key Lab of Medical Image,Nanchong 637000,China;2.Department of Radiology,People′s Hospital of Tongren City in Guizhou Province,Tongren 554300,China;3.Institute of Technical Guidance in Population and Family Planning Promotion of Tongren City in Guizhou Province,Tongren 554300,China

[Abstract] Objective To explore the difference of measured value in aneurysmal long diameter and neck width by 64-row three-dimensional computed tomography angiography(3D-CTA)and three-dimensional digital subtraction angiography(3D-DSA). Methods The data of patients with arterial aneurysm examined by 3D-CTA and 3D-DSA in Affiliated Hospital of North Sichuan Medical College from January 2012 to November 2013 were retrospectively analyzed,the difference of measured value in aneurysmal long diameter and neck width by these two methods was compared respectively. Results The value of aneurysmal maximum length by 3D-CTA and 3D-DSA was 5.68 mm and 5.72 mm respectively,with no statistical difference(P=0.102).The mean measured value of neck width was 3.01 mm and 2.92 mm respectively,with a statistical difference(P＜0.01).There was apparent correlation of aneurysmal maximum length and measured value of neck width by 3D-CTA and 3D-DSA respectively(r=0.993,0.975,P＜0.01). Conclusion 3D-CTA is an effective approach to describe the morphological feature of arterial aneurysm.

[Key words] Intracranial aneurysm;Computed tomography angiography;Digital subtraction angiography;Measured value

颅内动脉瘤是常见的病变，据报道成人发病率为1％～5％。在美国每年＞20万人发生非创伤性蛛网膜下腔出血，颅内动脉瘤破裂是最常见的原因，约占80％[1]，有文献报道，入院前死亡率达12.4%[2]。三维数字减影血管造影（three-dimensional digital subtraction angiography，3D-DSA）是颅内动脉瘤检查的金标准，但其是一种侵入性、耗时长、技术要求高的检查方法，且有一定的风险[3-4]。三维CT血管造影（three-dimensional computed tomography angiography，3D-CTA）对颅内动脉瘤具有很高的敏感性和特异性，对动脉瘤的形态特征显示良好，可以显示动脉瘤的颈部、载瘤动脉等，还可进行定量测量，利用这些指标可对颅内动脉瘤的破裂风险进行评估[5-9]。本文主要对比3D-DSA与3D-CTA测量颅内动脉瘤的大小。

1 资料与方法

1.1 一般资料

回顾性分析2012年1月～2013年11月在川北医学院附属医院行64排3D-CTA和3D-DSA检查的动脉瘤患者。除外3D-CTA及3D-DSA检查之前有夹闭或血管内介入治疗病例。……