DocumentCode
322233
Title
Spatial under-sampling of ultrasound images using Fourier-based synthetic aperture focusing technique
Author
Rastello, T. ; Vray, D. ; Chatillon, J.
Author_Institution
CREATIS, Inst. Nat. de la Sante et de la Recherche Med., Lyon, France
Volume
1
fYear
1997
fDate
5-8 Oct 1997
Firstpage
823
Abstract
Synthetic aperture focusing technique enables high resolution ultrasonic imaging. Nevertheless, the synthetic antenna must be correctly spatially sampled in order to satisfy the Shannon constraint, which limits the mapping rate. We show that this constraint can be overcome without resultant aliasing, thanks to the digital spotlighting technique. The mapping rate is then significantly improved
Keywords
acoustic signal processing; image sampling; ultrasonic focusing; ultrasonic imaging; Fourier-based synthetic aperture focusing; Shannon constraint; digital spotlighting; high resolution ultrasonic imaging; mapping rate; spatial under-sampling; ultrasound images; Amplitude modulation; Focusing; Frequency modulation; Image resolution; Image sampling; Radar antennas; Signal resolution; Spatial resolution; Ultrasonic imaging; Ultrasonic transducers;
fLanguage
English
Publisher
ieee
Conference_Titel
Ultrasonics Symposium, 1997. Proceedings., 1997 IEEE
Conference_Location
Toronto, Ont.
ISSN
1051-0117
Print_ISBN
0-7803-4153-8
Type
conf
DOI
10.1109/ULTSYM.1997.663140
Filename
663140
Link To Document