Just the person from whom I had hoped I would hear !

Thank you for the information.

>In our lab based on an analysis of 352 carotid artery duplex scans and angios
>and calculating angiographic stenosis according to the NASCET method an ICA to
>CCA PSV ratio of 2.7 predicts a >50% to 99% ICA stenosis with sens, spec,
>etc of
>about 90%. These numbers were derived using Acuson and ATL machines and a
>population with a high prevalence of disease. As everyone is likely aware,
>different machines and different populations may have slightly different, or
>even dramatically different, cut points. These criteria, currently not
>published, and others soon to be derived I'm sure, must be evaluated in
>individual labs for accuracy with your machines and your patient population.

David Fox, MD

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David Fox, MD
Division of Vascular Surgery
St. Luke's - Roosevelt Hospital Center
425 West 59th Street
New York, New York 10019

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