DocumentCode
3367368
Title
Depth-independent narrow beamwidth 3D ultrasonic image formation technique
Author
Benenson, Zalman M. ; Elizarov, Alexey B. ; Yakovleva, Tatiana V. ; O´Brien, William D., Jr.
Author_Institution
Sci. Council on Cybern., Acad. of Sci., Moscow, Russia
Volume
2
fYear
2002
fDate
8-11 Oct. 2002
Firstpage
1589
Abstract
A technique is proposed that generates a depth-independent and narrow beamwidth 3D ultrasonic image. A high-frequency, wide-bandwidth spherical transducer is scanned in 2D along Cartesian coordinates. The received wideband ultrasonic pulses are dynamically focused by means of correcting the spatial spectrum of signals for various temporal frequencies. The main procedures of the algorithm consist in the direct and inverse fast Fourier transforms by time and by two spatial Cartesian coordinates.
Keywords
fast Fourier transforms; ultrasonic focusing; ultrasonic imaging; 3D ultrasonic imaging; Cartesian coordinates; depth-independent narrow-beamwidth technique; dynamic focusing; fast Fourier transform algorithm; high-frequency wide-bandwidth spherical transducer scanning; Apertures; Fast Fourier transforms; Focusing; Fourier transforms; Frequency; Phased arrays; Scattering; Signal processing algorithms; Spatial resolution; Transducers;
fLanguage
English
Publisher
ieee
Conference_Titel
Ultrasonics Symposium, 2002. Proceedings. 2002 IEEE
ISSN
1051-0117
Print_ISBN
0-7803-7582-3
Type
conf
DOI
10.1109/ULTSYM.2002.1192597
Filename
1192597
Link To Document