Search International and National Patent Collections

1. (WO2018060820) ULTRASONIC SHEAR WAVE IMAGING WITH BACKGROUND MOTION COMPENSATION

Pub. No.:    WO/2018/060820    International Application No.:    PCT/IB2017/055756
Publication Date: Fri Apr 06 01:59:59 CEST 2018 International Filing Date: Sat Sep 23 01:59:59 CEST 2017
IPC: G01S 7/52
G01S 15/89
Applicants: KONINKLIJKE PHILIPS N.V.
Inventors: CLARK, David Wesley
Title: ULTRASONIC SHEAR WAVE IMAGING WITH BACKGROUND MOTION COMPENSATION
Abstract:
An ultrasonic diagnostic imaging for analyzing shear wave characteristics utilizes a background motion compensation subsystem which acts as a spatial filter of pulse-to-pulse autocorrelation phases over the ROI of tracking pulse vectors to compensate for background motion. The subsystem is configured to compute the sum of all lag-1 autocorrelations of tracking line ensemble data over the tracking ROI, for each PRI. The inventive technique does not significantly reduce sensitivity to shear waves, because the shear wave is spatially smaller than the ROI.