The Value of NCE-MRA and Ultrasound in Evaluating the Degree of Renal Artery Stenosis in Patients with Renal Insufficiency
Objective:To explore the value of non enhanced magnetic resonance angiography(NCE-MRA)compared with ultrasound in evaluating the degree of renal artery stenosis(RAS)in patients with renal insufficiency.Methods:Data were collected from 100 patients with renal insufficiency and sus-pected RAS in our hospital from May 2021 to April 2023.All patients underwent NCE-MRA and ultra-sound examinations,using the results of selective renal artery angiography(SRA)as the gold standard.We analyzed the consistency,diagnostic efficacy,and detection of different degrees of renal artery steno-sis using NCE-MRA,ultrasound,and gold standard.Results:Among the 100 patients with renal insuffi-ciency,42(42.00％)were positive for RAS and 58(58.00％)were negative according to the gold standard;Among 42 patients with renal artery stenosis,9 were mild(21.43％),18 were moderate(42.86％),12 were severe(28.57％),and 3 were luminal occlusion(7.14％);The consistency between ultrasound and gold standard was moderate(Kappa=0.628),while the consistency between NCE-MRA and gold standard was good(Kappa=0.857);The sensitivity and accuracy of NCE-MRA for RAS in patients with renal insuffi-ciency were higher than those of ultrasound examination(P＜0.05),but there was no difference in the specificity,negative predictive value,and positive predictive value between the two(P＞0.05);The accu-racy of ultrasound and NCE-MRA in detecting severe RAS and occlusion is generally consistent,but com-pared to ultrasound,NCE-MRA has a higher accuracy in detecting mild to moderate RAS.Conclusion:Compared with ultrasound examination in diagnosing renal insufficiency patients,NCE-MRA has higher specificity and accuracy,which is more conducive to detecting different degrees of renal artery stenosis.
non enhanced magnetic resonance angiographyultrasound examinationrenal insuffi-ciencydegree of renal artery stenosisdiagnostic effectiveness
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