(Urb) wrote in
m:

http://www.labx.com/v2/adsearch/Deta...?adnumb=225064

Check out that site.

"Transcranial Doppler (TCD) is a non invasive ultrasound technology
used to evaluate blood flow velocity in the major basal intracranial
arteries."

Probably not at all what the original poster had in mind.

--
Bert Hyman | St. Paul, MN |