磁共振成像Issue(4)：241-245,5.DOI:10.3969/j.issn.1674-8034.2013.04.001
无对比增强MR血管成像与CT血管成像对肾动脉狭窄评价的对照研究
Non-contrast-enhanced MR angiography for evaluation renal artery stenosis:comparison with CT angiography
王萱 1赵欣智 1薛华丹 1刘梦雨 1金征宇1
作者信息
- 1. 中国医学科学院北京协和医学院北京协和医院放射科，北京100730
- 折叠
摘要
Abstract
Objective:To explore the application of non-contrast-enhanced magnetic resonance angiography (MRA) with time-spatial labeling inversion pulse (Time-SLIP) for assessment of renal artery stenosis (RAS) comparing with computer tomography angiography (CTA). Materials and Methods: Twenty-two patients [12 men and 10 women, mean age:(47.4±9.2) years] in the suspicion of RAS were evaluated with MRA and CTA in the same period. Coronal and axial true steady-state free-precession (SSFP) sequences with Time-SLIP technique were performed on a 1.5 T MRI system for MRA imaging. Image quality and grade of RAS were evaluated. The Unenhanced-MRA images were compared against CTA results. Results: Forty-six renal arteries were included in the statistical analysis. Image quality of MRA was excellent in 63%(29 of 46), good in 28%(13 of 46) and moderate in 9%(four of 46) of patients. The agreement between Time-SLIP MRA and CTA assessments for RAS grading was excellent, with a Spearman rank-order correlation coefifcient (r) of 0.991 (P<0.01). The sensitivity and speciifcity of non-enhanced-MRA for the detection of signiifcant RAS (≥50%) were 100%and 97.1%using CTA as the gold standard. Conclusion:Non-contrast-enhanced MRA with Time-SLIP is an appropriate method for assessment of renal artery stenosis.关键词
磁共振血管造影术/肾动脉梗阻/体层摄影术,X线计算机Key words
Magnetic resonance angiography/Renal artery obstruction/Tomography, X-ray computed分类
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王萱,赵欣智,薛华丹,刘梦雨,金征宇..无对比增强MR血管成像与CT血管成像对肾动脉狭窄评价的对照研究[J].磁共振成像,2013,(4):241-245,5.
