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目的:探讨MR增强血管造影(CE-MRA)显示肾动脉解剖变异的价值。方法:采用回顾性分析213例肾动脉CE-MRA检查图像,包括肾动脉变异的显示情况以及分型。结果:肾动脉变异分别占病例数和肾脏数的30.05%(64/213)和19.72%(84/426),其中肾动脉过早分支发生率为6.57%(28/426),副肾动脉变异发生率为13.15%(56/426)。女性肾动脉变异发生率小于男性,同一患者两侧肾动脉变异发生率无显著性差异。常见肾动脉解剖变异类型均有显示。结论:肾动脉的解剖变异可以通过动态增强MR血管造影准确显示。
Objective: To investigate the value of MR-enhanced angiography (CE-MRA) in the anatomic variation of renal artery. Methods: A retrospective analysis of 213 cases of renal artery CE-MRA examination images, including the display of renal artery variation and classification. Results: The variations of renal artery accounted for 30.05% (64/213) and 19.72% (84/426) respectively of the number of cases and the number of kidney, of which the incidence of premature branch of renal artery was 6.57% (28/426) The incidence was 13.15% (56/426). The incidence of renal artery variability in females was less than that in males. There was no significant difference in the incidence of renal artery varices on both sides of the same patient. Common renal artery anatomical variations are shown. CONCLUSIONS: Anatomic variations of the renal arteries can be accurately demonstrated by dynamic contrast-enhanced MR angiography.