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1. (WO2003065070) 3D ULTRASOUND IMAGING APPARATUS AND METHOD USING COHERENT APERTURE COMBINING BEAMFORMING

Pub. No.:    WO/2003/065070    International Application No.:    PCT/CA2003/000112
Publication Date: Fri Aug 08 01:59:59 CEST 2003 International Filing Date: Thu Jan 30 00:59:59 CET 2003
IPC: G01S 7/52
G01S 7/531
G01S 15/89
G10K 11/34
Applicants: WILK ULTRASOUND OF CANADA INC.
WEBER, Peter
BERNARDI, Richard
NOHARA, Timothy, J.
Inventors: WEBER, Peter
BERNARDI, Richard
NOHARA, Timothy, J.
Title: 3D ULTRASOUND IMAGING APPARATUS AND METHOD USING COHERENT APERTURE COMBINING BEAMFORMING
Abstract:
A probe for electronic volume data acquisition using ultrasound incorporates a plurality of transducer elements arranged in a two dimensional array having an azimuth direction and an elevation direction. The transducer elements have a first element size in the azimuth dimension and a second element size in the elevation dimension. At least one of the first and second element sizes is at least twice a characteristic wavelength of a waveform used to drive the array of transducer elements, where the characteristic wavelength is defined as the wavelength corresponding to a center frequency of the waveform. Image data is generated in a scanning process using a CAC-BF technique in an azimuth dimension and/or an elevation dimension, to form an ultrasound image line, image plane, or image data cube.