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目的探讨螺旋CT动脉造影(CTA)在糖尿病下肢动脉闭塞性病变中的诊断价值及临床意义。方法对27例糖尿病伴下肢不适的患者行CTA检查,范围腹主动脉远段至足底,层厚5 mm,螺距1.375,重建层厚1.25 mm,重叠50%,对比剂量100～150 ml,注射速率3.5 ml/s,对全部图像行最大密度投影(MIP)、容积再现(VR)和多平面重组(MPR)后处理并进行评价。结果所有病例血管重建图像显示良好,病变血管表现为管腔不规则、单发或多发狭窄或闭塞、局部侧支血管形成、部分管壁钙化等。结论 CTA可准确地显示糖尿病血管病变情况,有效地指导临床治疗,有显著的临床应用价值。
Objective To investigate the diagnostic value and clinical significance of spiral CT angiography (CTA) in the occlusion of lower extremity arterial occlusive disease in diabetic patients. Methods Twenty-seven patients with diabetes mellitus and lower extremity discomfort underwent CTA. The range of distal abdominal aorta to the plantar floor was 5 mm and the pitch was 1.375. The reconstructed layer thickness was 1.25 mm. The overlap was 50% and the contrast dose was 100-150 ml. The rate of 3.5 ml / s was used for post-processing and evaluation of the maximum density projection (MIP), volume rendering (VR) and multiplanar reorganization (MPR) for all the images. Results All the cases showed good angiographic reconstruction. The diseased vessels showed irregular luminal, single or multiple stenosis or occlusion, partial collateral vessel formation, partial wall calcification and so on. Conclusion CTA can accurately display the diabetic vascular disease, effectively guide the clinical treatment, there is a significant clinical value.