The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 31, 1995
Filed:
May. 25, 1994
Katherine W Ferrara, New York, NY (US);
V Ralph Algazi, Davis, CA (US);
The Regents of the University of California, Oakland, CA (US);
Abstract
A method for assessing and displaying vasculature in a tissue mass using ultrasound and optimal velocity dependent data acquisition to differentiate between received signals from stationary tissue and received signals from slowly moving blood is disclosed herein. For a particular flow velocity, an optimal periodic or aperiodic signaling strategy is determined by matching the observation interval of any group of scatters to the correlated signal interval. Signals from moving blood cells are separated from signals from stationary tissue using a wall filter. Wall filtered signals from moving blood cells are further separated from signals from stationary tissue using a threshold filter. The resulting enhanced spatial and velocity resolution provides for identification of tumors by resistive index measurement, assessment of the percentage of vasculature in a section of tissue mass, and assessment of random structural characteristics, and further provides for three dimensional graphical display of vasculature within and surrounding a tissue mass.