老年患者非对比剂增强肾动脉磁共振血管造影的参数优化探讨

摘要

Objective To optimize the scan parameters of renal artery non-contrast enhanced magnetic resonance angiography in aged people.Methods Forty-five aged people were divided into 60-75 year-old group and over 75 year-old group.IFIR-FIESTA sequences were carried out by using various BSP-TI with 1100ms,1200ms and 1300ms,all other parameters were identical.The image quality,renal artery branches and renal vein artifact were evaluated by two experienced radiologists between different BSP-TI.Results BSP-TI 1200ms was optimal for 60-75 year-old group while 1300ms was most suitable for above 75 year-old group.Conclusion Non-contrast enhanced magnetic resonance angiography of renal artery is feasible in clinical routine practice.%目的 优化老年患者非对比剂增强肾动脉磁共振血管造影(MRA)的扫描参数.方法 将45例60岁以上的老年受试者分为60 ～75岁组和75岁以上组,采用不同的血流抑制反转时间(BSP-TI)进行扫描,通过比较图像质量、肾动脉分支和肾静脉伪影,得出不同年龄组的最佳BSP-TI时间.结果 60～75岁组的老年患者选择1200 ms的BSP-TI时间能获得最佳成像效果,75岁以上组的老年患者选择1300ms的BSP-TI时间能获得最佳成像效果.结论 非对比剂增强肾动脉MRA能良好地显示肾动脉及其分支,有较好的临床实用性.