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19 June 2013 : Original article  

Comparison of diagnostic accuracy of Doppler USG and contrast-enhanced magnetic resonance angiography and selective renal arteriography in patients with atherosclerotic renal artery stenosis

Kenan TurgutalpAEG, Ahmet KiykimAD, Onur ÖzhanB, İlter HelvacıC, Türkay ÖzcanF, Altan YıldızB

DOI: 10.12659/MSM.889035

Med Sci Monit 2013; 19:475-482


BACKGROUND: There are many systemic complications of conventional selective renal arteriography (SRA), such as contrast-mediated nephropathy. Contrast-enhanced magnetic resonance angiography (CE-MRA) and renal artery Doppler ultrasonography (DUSG) have been used increasingly for renal artery stenosis (RAS). The aim of this study was to evaluate the accuracy of CE-MRA and DUSG as used for diagnosis of RAS.

MATERIAL AND METHODS: We divided 130 consecutive patients investigated for resistant hypertension into 2 groups based on age: group 1 was patients <60 years old and group 2 was patients >60 year. DUSG, CE-MRA, and SRA were performed in group 1 and group 2 patients.

RESULTS: Seventy-two patients (24 males [M], 48 females [F]) in group 1, and 58 patients (26 M, 32 F) in group 2 were included in the study. In the evaluation of clinically significant renal artery stenosis with DUSG, in group 1 the overall sensitivity was 83.33% and overall specificity was 81.82%, and in group 2 they were 69.23% and 0%, respectively, when compared with SRA. In the evaluation of clinically significant renal artery stenosis with CE-MRA, the overall sensitivity and specificity were 92.31% and 36.36%, respectively, in group 1 and 100.00% and 73.33%, respectively in group 2, when compared with SRA.

CONCLUSIONS: CE-MRA is an accurate, non-invasive method for the diagnosis of RAS in patients above 60 years of age and DUSG may be the choice of diagnostic method for RAS in patients under 60 years of age.

Keywords: Renal Artery Obstruction - ultrasonography, Renal Artery - ultrasonography, Magnetic Resonance Angiography, Demography, Contrast Media - diagnostic use, Atherosclerosis - ultrasonography, Angiography, Reproducibility of Results, Ultrasonography, Doppler

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Medical Science Monitor eISSN: 1643-3750
Medical Science Monitor eISSN: 1643-3750