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A Real-Time Dual-Mode High-Frequency Beamformer for Ultrafast and Focused Imaging.

Authors :
Campbell NA
Brown JA
Source :
IEEE transactions on ultrasonics, ferroelectrics, and frequency control [IEEE Trans Ultrason Ferroelectr Freq Control] 2022 Apr; Vol. 69 (4), pp. 1268-1276. Date of Electronic Publication: 2022 Mar 30.
Publication Year :
2022

Abstract

A firmware-based high-frequency beam- former implementing both conventional transmit focused B-mode imaging and diverging wave ultrafast (UF) imaging for Doppler overlay was developed. The beamformer can generate one transmit focused frame with four transmit focal zones (FZs), and 68 UF frames with 16 diverging waves each at a 10-Hz frame rate. The beamformer firmware stores the beamforming delays as a single bit, enabling efficient compression within the internal memory. The beamformer was characterized using a 30-MHz 64-element phased array endoscope. The hybrid system generates a 128 line by 768-pixel focused B-mode image spanning 1.2-12.6 mm axially over a ±32° range of steering angles. In addition, the system generates an UF image that is 64 lines by 384-pixels spanning 3.5-10.8 mm axially over a ±16° angle.

Details

Language :
English
ISSN :
1525-8955
Volume :
69
Issue :
4
Database :
MEDLINE
Journal :
IEEE transactions on ultrasonics, ferroelectrics, and frequency control
Publication Type :
Academic Journal
Accession number :
35148263
Full Text :
https://doi.org/10.1109/TUFFC.2022.3151218