流入翻转恢复序列磁共振血管成像对肾动脉检查扫描参数的优化  

Scan parameter optimization of renal artery with inflow-sensitive inversion recovery magnetic resonance angiography

作　　者：王朋[1] 张军[1] 刁强[1] 李林[1] 杨刚[1] 郑玲[1] 李延军[1] 

机构地区：[1]南京军区南京总医院医学影像科,南京医学硕士210002

出　　处：《医学研究生学报》2015年第2期186-188,共3页Journal of Medical Postgraduates

基　　金：国家自然科学基金(81401469)

摘　　要：目的非增强磁共振血管成像是当前国内外研究的热点。文中探讨流入翻转恢复序列磁共振血管成像在肾动脉检查中的扫描参数优化。方法收集2013年12月至2014年5月间南京军区南京总医院60例行肾动脉成像的患者,并按结果示有无狭窄分为狭窄组12例和无狭窄组48例。对每组同一患者利用不同的流入翻转恢复时间进行扫描,时间设定分别为1200、1300和1400 ms,进而得到同一患者的3组肾动脉图像。通过2名有经验的影像科医师对图像进行评估,选出最佳图像,从而得出2组的最佳流入翻转恢复时间。结果狭窄组患者选择1400 ms的流入翻转时间可得到最佳图像,无狭窄组患者选择1200 ms的流入翻转恢复时间可得到最佳图像。结论流入翻转恢复序列磁共振动脉成像通过优化参数能较好显示肾动脉及其分支,具有较好的临床实用性,尤其对于肾功能不全患者可成为首选检测方法。Objective Non-contrast enhanced magnetic resonance angiography（ MRA） has become the focus of research at home and abroad. The aim of the article was to optimize the scan parameters of renal artery with inflow-sensitive inversion recovery（ IFIR） MRA. Methods 30 cases of renal artery patients into two groups were collected from December 2013 to May 2014 in our hospital. They were divided into stenosis group（ n = 12） and non-stenosis group（ n = 48）. IFIR-MRA sequences were carried out on each patient by using various BSP-TI with 1200,1300 and 1400 ms,all other parameters were identical. The image signal to noise ratio,a renal artery branch and venous artifact were evaluated by two experienced radiologists,and the best BSP-TI was obtained from different groups. Results BSP-TI = 1400 ms was optimal for renal artery stenosis group while 1200 ms was the most suitable for non-stenosis group. Conclusion IFIR-MRA of renal artery can achieve better image quality of renal artery and its branches and it is feasible in clinical routine practice,especially for those patients with renal insufficiency.

关 键 词：非对比增强流入敏感翻转恢复序列 血流抑制翻转时间 磁共振血管成像 肾动脉狭窄 

分 类 号：R445[医药卫生—影像医学与核医学]