16层CT血管造影在下肢动脉硬化闭塞症中的诊断价值

Diagnostic value of CTA with 16-slice in arteriosclerotic occlusive disease of lower limb

目的探讨16层螺旋CT血管造影在下肢动脉硬化闭塞症中的诊断价值及临床意义。方法对31例临床疑有下肢动脉硬化闭塞症者行螺旋CT增强扫描,对全部图像行最大密度投影、容积再现及表面阴影显示重建,部分行血管内镜重建,并对图像进行评价,31例中6例行DSA检查,10例行手术治疗。结果所有病例血管重建图像显示良好。将腹主动脉以下病变分五型,其中腹主动脉型2例,髂动脉型2例,股腘动脉型14例,小腿动脉型4例,广泛型8例,1例未见异常。病变的CTA表现为血管管腔不规则,单发或多发狭窄或闭塞,局部侧支血管形成,部分管壁钙化。行DSA检查和手术治疗的16例中15例与MSCTA结果完全吻合。结论16层螺旋CT血管造影可以充分而准确地显示下肢动脉硬化闭塞症的病变情况,有较好的临床应用价值。

Objective To evaluate the diagnostic value of 16-slice CT angiography （CTA） in arteriosclerotic occlusive disease of lower limb. Methods 31 cases clinically suspected as arteriosclerotic occlusive disease of lower limb were performed CT angiography with a 16-slice canner. All reconstructed imagos were reformed by means of MIP, VR, SSD and VE. 6 cases of DSA and 10 cases of surgical exposition served as control group. Results All cases were demonstrated successfully with CTA. There were 2 cases in aorta abdominal artery, 2 cases in iliac artery, 14 cases in femoral and popliteal artery, 4 cases in artery of calf, 8 cases was diffusive and no lesion was found in 1 case. The pathological changes in CTA included irregular counter of vascular lumen, single and/ or multiple stenos and occlusion, forming of collateralization and calcification. 15 cases of MSCTA were consistent with DSA and operative exposure in the control group of 16 cases. Conclusion 16- slicespiral CT angiography was valuable to demonstrate arteriosclerotic occlusive lesion in artery of lower limb and classify it.