Assessment of diagnostic value of a new Doppler index for renal artery stenosis and comparison with conventional methods
نویسندگان
چکیده
This study aimed to assess a new Doppler parameter for diagnosis of renal artery stenosis (RAS), the bilateral renal ratio (BRR). Fifty-nine patients with suspicion of RAS were evaluated. The BRR, defined as the ratio of renal artery peak systolic velocities between the affected side and healthy side, was measured, and its sensitivity and specificity were compared to those of four conventional parameters. The best cutoff value for the new BRR was 2.05 with a sensitivity of 98.1% and specificity of 99%. The new BRR exhibited significant improvement compared to conventional parameters and thus, is a useful index for more accurate diagnosis of RAS.
منابع مشابه
A new ultrasound sign in the diagnosis of pediatric maxillary sinusitis
Background: Computed tomography scans (CT scan) and X-rays are used to diagnose paediatric maxillary sinusitis. This study aimed at exploring the diagnostic value of the conventional and colour Doppler ultrasounds and their specific findings in cases of paediatric sinusitis. Methods: A total of 60 children diagnosed with sinusitis were included in this s...
متن کاملDiagnostic role of new Doppler index in assessment of renal artery stenosis
BACKGROUND Renal artery stenosis (RAS) is one of the main causes of secondary systemic arterial hypertension. Several non-invasive diagnostic methods for RAS have been used in hypertensive patients, such as color Doppler ultrasound (US). The aim of this study was to assess the sensitivity and specificity of a new renal Doppler US direct-method parameter: the renal-renal ratio (RRR), and compare...
متن کاملComparison of Diagnostic Value of Intrarenal Doppler Indices and Microalbuminuria for Detection of Diabetic Nephropathy in Type II Diabetic Patients
Background & Aims: Diabetes is the most common cause of renal insufficiency throughout the world. The main cause of renal failure in diabetic patients is microvascular endothelial injuries that is secondary to atherosclerosis and ischemia. The efficacy of renal Doppler indices such as resistive index (RI) and pulsetile index (PI) for the evaluation of intrarenal arteries has been shown. This st...
متن کاملA comparison of Power Doppler with conventional sonographic imaging for the evaluation of renal artery stenosis
BACKGROUND Power Doppler (PD) has improved diagnostic capabilities of vascular sonography, mainly because it is independent from the angle of insonation. We evaluated this technique in a prospective comparison with conventional imaging, consisting in Duplex and Color Doppler, for the evaluation of Renal Artery (RA) stenosis. METHODS Sensitivity, specificity and predictive values of PD and con...
متن کاملمقایسه قدرت تشخیصی اندکس داپلر مقاومت شریان کلیه با روش سنتی گرافی DMSA در کودکان مبتلا به عفونت مجاری ادراری تب دار و پیش بینی پیلونفریت حاد و رفلاکس در آنها
Background and Purpose: UTI is one of the most common bactctrial infections in pediatrics. Febrile urinary tract infection can produce severe renal complications when unrecognized or untreated. Acute pyelonephritis (APN) and reflux are two synergistic factors in the destruction of kidneys of children. There are no certain specific diagnostic laboratory tests and clinical symptoms for diagnosi...
متن کامل