Beam profiles and images from two-dimensional arrays

Author

Daft, Chris M W ; Smith, L. Scott ; O´Donnell, Matthew

Author_Institution

GE Corp. Res. & Dev. Center, Schenectady, NY, USA

fYear

1990

fDate

4-7 Dec 1990

Firstpage

775

Abstract

Comparisons are made between fixed-focus linear arrays and two-dimensional arrays using beam profiles and simulated images. Conclusions are also drawn about optimal geometries of 2-D arrays. The results presented show that substantial improvements in image quality can be obtained with simple 2-D transducer arrays. An array with only three elements in the slice thickness direction is much better at controlling the size of the beam close to, and far from, the transducer. Potential applications would include cardiac scanning on a 128-channel system

Keywords

acoustic arrays; acoustic imaging; acoustic radiators; biomedical ultrasonics; cardiology; ultrasonic transducers; 128-channel system; 2-D arrays; 2-D transducer arrays; acoustic radiators; beam profiles; cardiac scanning; digital ultrasound scanners; fixed-focus linear arrays; optimal geometries; simulated images; slice thickness direction; two-dimensional arrays; Acoustic beams; Acoustic imaging; Apertures; Computational modeling; Convolution; Focusing; Phased arrays; Research and development; Transducers; Ultrasonic imaging;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultrasonics Symposium, 1990. Proceedings., IEEE 1990

Conference_Location

Honolulu, HI

Type

conf

DOI

10.1109/ULTSYM.1990.171470

Filename

171470