Resumen
A ultra-fast high frequency ultrasound hardware based beamformer is described. The system was tested using a miniature 40 MHz 64 element phased array endoscope. The system used diverging wave beamforming with a total of 16 diverging waves in order to obtain a good beam profile at a 700+ Hz frame rate. Experimentally, the system was able to operate at a frame rate of 500 Hz, close to the implementations theoretical limit of 760 Hz. A novel technique was used to store 8.3 Million beamforming delays for 8 channels on a field programmable gate array (FPGA). The measured secondary lobe levels for the radiation pattern measurements were less than -35 dB and the main lobe had a beam width of 0.7 mm. Using field II, the simulated radiation pattern had secondary lobes suppressed to -50 dB and a beam width of 0.15 mm. Real-time images of wire phantoms were generated and displayed with custom developed imaging software.
Idioma original | English |
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Título de la publicación alojada | 2019 IEEE International Ultrasonics Symposium, IUS 2019 |
Editorial | IEEE Computer Society |
Páginas | 1505-1508 |
Número de páginas | 4 |
ISBN (versión digital) | 9781728145969 |
DOI | |
Estado | Published - oct. 2019 |
Evento | 2019 IEEE International Ultrasonics Symposium, IUS 2019 - Glasgow, United Kingdom Duración: oct. 6 2019 → oct. 9 2019 |
Serie de la publicación
Nombre | IEEE International Ultrasonics Symposium, IUS |
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Volumen | 2019-October |
ISSN (versión impresa) | 1948-5719 |
ISSN (versión digital) | 1948-5727 |
Conference
Conference | 2019 IEEE International Ultrasonics Symposium, IUS 2019 |
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País/Territorio | United Kingdom |
Ciudad | Glasgow |
Período | 10/6/19 → 10/9/19 |
Nota bibliográfica
Publisher Copyright:© 2019 IEEE.
ASJC Scopus Subject Areas
- Acoustics and Ultrasonics