1.5T MR肾动脉CeMRA与IFIR的对比分析(附82例报告)  

Contrast-Enhanced MRA and Inflow Inversion Recovery Sequence Scanning of Renal Artery with 1.5 T MR Scanner: A Comparative Study in 82 Cases

作　　者：孙海燕[1] 杨成[2] 袁玉林[1] 李丽亚[2] 

机构地区：[1]武汉大学基础医学院,430022 [2]湖北民族学院附属民大医院放射科,恩施445000

出　　处：《临床放射学杂志》2015年第2期241-244,共4页Journal of Clinical Radiology

摘　　要：目的探讨对比增强磁共振血管成像(Ce MRA)及流入反转恢复(IFIR)序列对肾动脉及其病变显示的临床应用价值。方法对82例确诊高血压拟诊为肾动脉狭窄者同时行Ce MRA和IFIR检查,对比分析两者副肾动脉、肾动脉分支以及肾动脉狭窄的检出率,并比较图像质量。结果 Ce MRA显示肾动脉198支(含副肾动脉34支),肾动脉各级分支均显示128支,IFIR显示肾动脉198支(含副肾动脉34支),肾动脉各级分支均显示162支,Ce MRA显示肾静脉8支,而IFIR无肾静脉显示,两种成像方法对肾动脉分支的显示差异有统计学意义(χ2=14.89,P<0.01),对肾动脉主干(198支)及肾动脉狭窄的检出率相同(15/198支)。结论 Ce MRA和IFIR对肾动脉各级分支的显示差异有统计学意义,而对于肾动脉主干及狭窄的显示差异无统计学意义。由于IFIR成像无需注入对比剂,没有对比剂肾病的潜在危险,并且可以短期内重复检查,可以作为肾动脉狭窄的初步筛查手段。Objective To evaluate the contrast-enhanced MR angiography （CeMRA） and inflow inversion recovery （IFIR） sequence in displaying the renal artery lesions. Methods A total of 82 patients with confirmed hypertension pos- sibly caused by renal artery stenosis were enrolled in this study. Both CeMRA and IFIR examinations were performed in all patients. The detection rates of the stenosis of the accessory renal artery, renal artery and renal artery branch were deter- mined; the results were compared between CeMRA and IFIR, and the image quality was evaluated. Results CeMRA displayed 198 renal arteries, including 34 accessory renal arteries; a total of 128 arterial branches of different levels were demonstrated. IFIR sequence scanning showed 198 renal arteries, including 34 accessory renal arteries; and a total of 162 arterial branches of different levels were demonstrated. CeMRA showed 8 renal veins, while no renal vein was observed on IFIR image. Statistically significant difference in displaying the renal artery branches existed between CeMRA and IFIR （ X2 = 14.89, P 〈0.01 ） ; the detection rate of renal artery stenosis （15/198） by CeMRA and IFIR was the same. Conclu- sion Statistically significant difference in displaying rate of the renal artery branches exists between CeMRA and IFIR, al- though the difference in revealing the main stem of the renal artery and renal artery stenosis between CeMRA and IFIR is not significant. As IFIR sequence imaging needs no injection of contrast, it doesn＇ t carry any potential risk of contrast-in- duced nephropathy. Besides, IFIR can be performed repeatedly in a short interval. Therefore, IFIR can be used as a pre- liminary screening method for renal artery stenosis

关 键 词：肾动脉 对比增强磁共振血管成像 流入反转恢复序列 对比研究 

分 类 号：R692[医药卫生—泌尿科学] R445.2[医药卫生—外科学]