3D-CTA在周围动静脉畸形诊治中的初步应用

目的：观察比较16层螺旋CT血管造影(3D-CTA)和数字减影血管造影技术(DSA）在周围动静脉畸形中的应用价值。方法：16例周围动静脉畸形(AVM)病人，分别进行DSA和CTA检查。进行畸形病灶、各级供应动脉、经济学等指标的比较。有关数据利用SPSS10.0软件进行t检验。结果：以DSA为诊断的阳性对照。CTA对畸形血管团诊断准确率为100％，对畸形血管团的第1、2级供应动脉诊断的准确率达86％，对第3级供应动脉的确诊率低。CTA平均费用为800元；同时进行三维重建后的CTA图像，有助于对AVM和周围组织的关系判断。结论：多层3D-CTA作为一种微创、高分辨率的血管造影技术，在AVM的诊断中具有重要的价值，而且有助于手术方案的制定。

Preliminary experience of 16-layer three-dimensional computed tomography in diagnosis and treatment of arteriovenous malformations

PURPOSE: We assessed the value of 16-layer three-dimensional computed tomography angiography (3D-CTA) and digital subtraction angiography (DSA) in diagnosis of the arteriovenous malformations (AVM). METHODS: 16 patients with AVM were examined by 16 layers CT scan and DSA. RESULTS: The DSA imaging provided excellent visualization in all of patients, including size, location, and feeding arterial of AVM. The value of the diagnosis of the nidus malformation vascular by 3D-CTA was similar to that by DSA, however, CTA was not good at diagnosis of the third feeding artery of AVM. The three-dimensional reconstruction also further revealed the relation of lesion and surrounding tissue which is helpful in making an appropriate decision before treatment. Differences in dates were compared using the t test. P <0.05 was considered statistically significant. CONCLUSION: 16-layer 3D-CTA was a superior approach for diagnosis and follow up of the AVM.