Re: Ultrasound diagnose blocked neck artery ?
From: bink2 (Bink2_at_comcast.net)
Date: 12/29/04
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Date: Tue, 28 Dec 2004 20:07:54 -0500
You can also monitor fluid flow by ultrasound suing doppler shifts. So
rather tahn resolving a specific lesion, you are looking for diminished
blood flow
<not@top-post> wrote in message news:Qt-dndVpbNL8S8LcRVn-tA@is.co.za...
> A 75 yo woman, with poor medical facilities here in s. africa, told
> me how, on a paid visit to her family in Finland, the doctor had
> mentioned about ultrasound diagnosis [he didn't have the facilties
> at the time] for her suspected blocked neck artery.
>
> I understand that the resolution of 'detection' by any medium
> is limited to the wavelength. And since ultrasound has a relatively
> long wavelength, resolution below 1mm. would not be possible.
>
> I imagine that sub-mm resultion would be needed to detect
> artery blockage ?
>
> Please tell: in what way am I mistaken ?
>
> Thanks,
>
> == Chris Glur.
>
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