Acoustical image reconstruction in parallel-processing analog electronic systems

Ultrafast cardiac-valve ultrasonic tomography requires parallel multichannel processing of received echoes. In parallel processing the level of secondary ’’ghost’’ images due to spatial undersampling is much higher than in slower series processors which use a selective field insonification. The pape...

Full description

Saved in:
Bibliographic Details
Published in:Journal of applied physics 1979-01, Vol.50 (5), p.3153-3159
Main Authors: Delannoy, B., Torguet, R., Bruneel, C., Bridoux, E., Rouvaen, J. M., Lasota, H.
Format: Article
Language:English
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Ultrafast cardiac-valve ultrasonic tomography requires parallel multichannel processing of received echoes. In parallel processing the level of secondary ’’ghost’’ images due to spatial undersampling is much higher than in slower series processors which use a selective field insonification. The paper describes a 20-channel moving-focus parallel-processing analog electronic system, which is realized in our laboratory. It is shown analytically that the secondary-image level is reduced and remains unchanged when the receiver angular aperture (aperture relative to distance) is limited and kept constant during the whole observation time.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.326397