透视触发法3D CE-MRA在肾动脉血管病变中的应用

Fluoroscopically triggered three-dimensional contrast enhanced magnetic resonance angiography:the application to the diseases of renal arteries

目的:探讨透视触发法三维对比增强磁共振血管成像技术及其在诊断肾动脉狭窄中的临床应用价值。方法:对69例疑有肾动脉狭窄的患者,行肾动脉3DCE-MRA检查,然后进行最大信号强度投影重建和多层面重建。结果:69例均获得清晰的血管图像,其中13例未见异常;共有145支肾动脉显影,其中53支狭窄,另有3支完全闭塞。结论:透视触发法三维对比增强磁共振血管成像技术简便易行,副作用小,成像效果与DSA相仿,在诊断肾动脉狭窄方面具有广泛的临床应用价值。

Objective：To discuss the technique of fluoroscoplcally triggered three-dimensional contrast enhanced magnetic resonance angiography （3D-CE-MRA） and its clinical application in the diagnosis of renal arteries stenosis. Methods：69 patients with suspected abnormality of the renal arteries underwent 3D-CE-MRA, and then, maximum intensity projection（MIP） and multiplanar reconstruction （MPR） were performed. Results： The renal arteries were well depicted in all patients and 13 eases in 69 patients were normal. 53 branches renal arteries in total 145 were stenosis and another 3 branches were occlusion. Conclusion： Fluoroscopy triggering 3D CE-MRA is easy to perform and its adverse reaction is tiny. As the imaging quality is similar to that of DSA, therefore, 3D-CE-MRA has general clinical application in the diagnosis of renal arteries stenosis.