Duplex sonography a useful tool for screening patients with suspected renal artery stenosis
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The current reference standard for the diagnosis of renal artery stenosis (RAS) is intra-arterial angiography. No single screening method that identifies patients who require this invasive procedure has been universally accepted. Williams and co-workers, therefore, performed a meta-analysis of studies that compared the accuracy of duplex sonography with that of intra-arterial angiography for the detection of RAS.
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