Jeffrey H Powers

US Patent:

RE44708, Jan 14, 2014

Filed:

Feb 28, 2007

Appl. No.:

11/713118

Inventors:

David N. Roundhill - Woodinville WA, US
Michalakis Averkiou - Nicosia, CY
Jeffrey E. Powers - Bainbridge Island WA, US

Assignee:

Philips Ultrasound, Inc. - Bothell WA

International Classification:

A61B 8/14

US Classification:

600447, 600437, 600440, 600441, 600443, 600453, 600458

Abstract:

An ultrasonic diagnostic imaging system and method are described which produce tissue harmonic images containing both fundamental and harmonic frequency components. Such a blended image takes advantage of the performance possible with the two types of ultrasonic echo information and can advantageously reduce near field clutter while improving signal to noise performance in the far field of the image.

US Patent:

20080234580, Sep 25, 2008

Filed:

Jan 31, 2005

Appl. No.:

10/597532

Inventors:

Matthew Bruce - Seattle WA, US
Jeffrey E. Powers - Bainbridge Island WA, US
David Hope Simpson - Bothell WA, US
Michalakis Averkiou - Kirkland WA, US

International Classification:

A61B 8/00
A61B 8/14

US Classification:

600441, 600458, 600447

Abstract:

An ultrasonic diagnostic imaging method and system produce diagnostic contrast images depicting both tissue perfusion and flow velocity in larger vessels by utilizing both linear and nonlinear imaging techniques. A sequence of echoes from differently modulated transmit pulses is received and processed in different ways to detect nonlinear signals from microbubble-perfused tissue and Doppler blood flow in larger vessels. The Doppler flow signals may be either linear or nonlinear or a mixture of both. A decision circuit classifies the detected signals for display pixels in a perfusion and/or flow and/or tissue image. Separate perfusion and flow images can be simultaneously displayed or an image of both perfusion and flow can be displayed.