CT增强扫描与MR增强扫描对腹主动脉及分支血管的比较影像学研究

Comparative Imaging Study of the Abdominal Aorta and its Branches with CT Enhanced Scanning and MR Enhanced Scanning

目的:比较CT增强扫描与MR增强扫描两种方法对腹主动脉及分支血管的影像学评估的可行性。材料与方法:收集符合纳入条件的行腹部CT血管成像或CT增强扫描与MR增强扫描的患者。分析比较两组图像,并测量腹主动脉及分支血管管腔的直径。结果:共30例患者(男17例、女13例)。CT增强扫描与MR增强扫描图像均可以清晰显示腹主动脉及其主要的动脉分支。两种成像方法测量的腹主动脉前后径(CT,17.38 mm±2.69 mm;MR,16.96 mm±2.82 mm),腹腔干直径(CT,7.56 mm±0.96 mm;MR,7.16 mm±1.35 mm),肠系膜上动脉直径(CT,7.61 mm±1.29 mm;MR,7.17 mm±1.39 mm),右肾动脉直径(CT,5.88 mm±1.12 mm;MR,5.46 mm±1.51 mm),左肾动脉直径(CT,5.75 mm±0.82 mm;MR,5.40 mm±1.29 mm),P>0.05,其间差异均无统计学意义。相关系数:腹主动脉r=0.773,腹腔干r=0.610,肠系膜上动脉r=0.605,右肾动脉r=0.664,P=0.000,存在强相关;左肾动脉r=0.435,P=0.016,存在中等程度相关。结论:使用MR增强扫描和CT增强扫描获得的血管测量数据同样准确,两种影像学评估方法具有可比性。

Objective： to evaluate the feasibility of two methods of contrast-enhanced CT and MR Imaging in evaluating of abdominal aorta and its branches. Materials and methods： The patients who met the inclusion criteria were collected, with MR enhanced scan and CT enhanced scan or abdominal CT angiography conducted. The images of two groups were, analyzed and compared, and the diameters of the abdominal aorta and branch vessels were measured. Results： A total of 30 patients（17 male and 13 female） were collected. The CT enhanced scan and MR enhanced scan could clearly show the abdominal aorta and its major branches. The abdominal aorta diameter（CT, 17.38 mm ± 2.69 mm; MR, 16.96 mm ± 2.82 mm）, the celiac trunk diameter（CT, 7.56 mm ± 0.96 mm; MR, 7.16 mm ± 1.35 mm）, the superior mesenteric artery diameter（CT, 7.61 mm ± 1.29 mm; MR, 7.17 mm ± 1.39 mm）, the right renal artery diameter（CT, 5.88 mm ± 1.12 mm; MR, 5.46 mm ± 1.51 mm）, the left renal artery diameter（CT, 5.75 mm ± 0.82 mm; MR, 5.40 mm ± 1.29 mm）, P 0.05. There was no statistical significance in the difference. Person correlation coefficient： abdominal aortic r = 0.773, celiac trunk r = 0.610, superior mesenteric artery r = 0.605, right renal artery r = 0.664, P = 0.000, There was a strong correlation. The left renal artery r = 0.435, P = 0.016, there was a moderate correlation. Conclusion： The data obtained from MR scan and CT scan is equally accurate, and the two imaging methods are comparable.