Value of non-enhanced magnetic resonance angiography in assessing renal artery stricture

doi:10.16150/j.1671-2870.2019.01.014

Abstract

Abstract:

Objective: To study the value of non-enhanced MRA in assessment of renal artery stricture. Methods: A total of 73 patients with clinically suspected renal artery stricture undergone magnetic resonance angiography were enrolled. The 1.5T MR device combined with respiratory triggering technique was used to perform non-enhanced MRA and then enhanced MRA imaging was undertaken. The two imaging results were compared and analyzed for image quality, consistency of renal artery stricture evaluation and display of branches of renal artery. Results: There was no statistically significant difference in image quality between non-enhanced MRA and enhanced MRA of renal artery.In the evaluation of renal artery stricture, the two were in good agreement (Kappa value 0.98), The non-enhanced MRA showed better renal artery branches than enhanced MRA (P<0.001). Conclusions: Non-enhanced MRA can fully display the renal artery stricture, and it is superior to enhanced MRA in displaying renal artery branches. Therefore，non-enhanced MRA is of great importance in clinical practice.

Key words: Renal artery, stricture, Magnetic Resonance Angiography, non-enhanced magnetic resonance angiography

CLC Number:

R445.2

LIU Fangtao, QI Xiaofeng, XU Xueqin, HUANG Juan, DONG Haipeng, NI Genxiong, ZHOU Wen, KONG Deyan. Value of non-enhanced magnetic resonance angiography in assessing renal artery stricture[J]. Journal of Diagnostics Concepts & Practice, 2019, 18(1): 72-76.

Figures/Tables 3

References 21

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项目	非增强MRA	增强MRA	P值
图像质量	3.29±0.74	3.22±0.89	0.612
肾动脉分支	2.99±0.70	2.32±0.57	<0.001
肾静脉伪影	4.99±0.12	4.47±0.55	<0.001

检查方法	肾动脉狭窄分级			合计
检查方法	1级	2级	3级	合计
非增强MRA	14	9	6	29
增强MRA	20	7	5	32