Vector Doppler system for stroke screening

Details Vector Doppler system for stroke screening Vector Doppler system for stroke screening

1996-11-08

1998-04-14

Manuel, George

Surgery

Truss

Pad

A61B 800

Patent

active

057380970

ABSTRACT:
A pulse Doppler system for determining blood flow velocity in a blood vessel in a body, in particular the carotid artery. A sample region covering a section of the artery is investigated, using two spaced transmitters, one with a frequency of 3 MHz and the other with a frequency of 4.5 MHz. The received echo beams are then processed to determine the component blood velocities for each frequency. The two component values are then resolved into a true blood flow velocity for the sample region. That information is used to produce a color-coded velocity map of the artery, which may be conveniently displayed to the operator.

REFERENCES:
patent: 4062237 (1977-12-01), Fox

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