Surgery – Truss – Pad
Patent
1994-05-13
1996-04-09
Manuel, George
Surgery
Truss
Pad
A61B 800
Patent
active
055052045
ABSTRACT:
A volume flow meter for displaying two-dimensional volume flow through a vessel, comprising an ultrasound instrument with scan head, a location and orientation sensor mounted to the scan head, and a computer connected to the ultrasound instrument and the sensor. The scan head is adapted to be positioned adjacent the vessel under investigation, for generating a raster of pixels which defines a color image representing flow velocities in the vessel through an image plane of the scan head. The sensor measures position and orientation of the scan head in three dimensions and generates a signal representative thereof to the computer. The computer receives said raster of pixels and the signal from the sensor and in response calculates the position and orientation of the vessel axis in three-dimensions responsive to orientation of the image plane longitudinally of the vessel. The computer then determines an angle .theta. between this axis and the image plane responsive to orientation of the image plane transversally to the vessel. Finally, the computer calculates and displays the volume flow as a summation of the flow velocities scaled by the tangent of the angle .theta..
REFERENCES:
patent: 4913159 (1990-04-01), Gardin et al.
patent: 5409010 (1995-04-01), Beach et al.
Japanese Circulation Journal, vol. 54, Mar. 1990, "Quantitative Color Flow Imaging to Measure the Two-dimensional Distribution of Blood Flow Velocity and the Flow Rate", Kitabatake et al., pp. 304-308.
Ultrasound in Med. & Biol., vol. 18, No. 5, 1992, "A Veolcity Evaluation Phantom for Colour and Pulsed Doppler Instruments", Rickey et al., pp. 479-494.
Fenster Aaron
Picot Paul A.
Manuel George
University Hospital (London) Development Corporation
LandOfFree
Ultrasonic blood volume flow rate meter does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Ultrasonic blood volume flow rate meter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ultrasonic blood volume flow rate meter will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-132702