An Ultrafast High-Frequency Hardware Beamformer for a Phased Array Endoscope

Nicholas A. Campbell, Christopher A. Samson, Jeremy A. Brown

Producción científica: Capítulo en Libro/Reporte/Acta de conferenciaContribución a la conferencia

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 originalEnglish
Título de la publicación alojada2019 IEEE International Ultrasonics Symposium, IUS 2019
EditorialIEEE Computer Society
Páginas1505-1508
Número de páginas4
ISBN (versión digital)9781728145969
DOI
EstadoPublished - oct. 2019
Evento2019 IEEE International Ultrasonics Symposium, IUS 2019 - Glasgow, United Kingdom
Duración: oct. 6 2019oct. 9 2019

Serie de la publicación

NombreIEEE International Ultrasonics Symposium, IUS
Volumen2019-October
ISSN (versión impresa)1948-5719
ISSN (versión digital)1948-5727

Conference

Conference2019 IEEE International Ultrasonics Symposium, IUS 2019
País/TerritorioUnited Kingdom
CiudadGlasgow
Período10/6/1910/9/19

Nota bibliográfica

Publisher Copyright:
© 2019 IEEE.

ASJC Scopus Subject Areas

  • Acoustics and Ultrasonics

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