Image of Duplex Scanning of the Peripheral Arteries: Correlation of the Peak Velocity Ratio with Angiographic Diameter Reduction

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Duplex Scanning of the Peripheral Arteries: Correlation of the Peak Velocity Ratio with Angiographic Diameter Reduction


The correlation of the peak systolic velocity (PSV) and the peak velocity ratio (PVR, calculated as intrastenotic PSV divided by proximally recorded PSV) with percent diameter reduction was studied in 62 patients with peripheral arterial occlusive disease. PSV values correlated well with angiographic diameter reduction (r =0.81, n = 106 stenoses), but due to large variability the sensitivity and specificity in the detection of >50% stenoses were only 66% and 80% (for a cutoff value of 180 cm/s).


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English
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NONE
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Ultrasound in Med. & BioL Vol. 18, No. 5, pp. 433-440, 1992
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