Design considerations and performance of a variable gain, variable bandwidth signal processing circuit for acoustoelectric imaging

Tushar Kanti Bera, Pier Ingram, Yexian Qin, Lars R Furenlid, Russell S Witte

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Acoustoelectric imaging (AEI) is a new technique for mapping current densities at high resolution depending on the size of the ultrasound (US) focus. The design and performance of the recording system is crucial for efficient AEI because the amplitude of the AE signal in biological tissue is on the order of a microvolt or less. In this direction, an AE signal processing circuit (AE-SPC), containing high voltage pulse suppressor, variable gain amplifiers, and variable frequency bandpass filters (BPF) is developed to minimize sources of noise and maximize sensitivity for signal detection. AE-SPC is tested and evaluated using both simulations and bench-top testing. The design may be optimal for AE mapping of weak electric currents in excitable tissue, such as the heart and brain.

Original languageEnglish (US)
Title of host publication2017 IEEE International Ultrasonics Symposium, IUS 2017
PublisherIEEE Computer Society
ISBN (Electronic)9781538633830
DOIs
StatePublished - Oct 31 2017
Event2017 IEEE International Ultrasonics Symposium, IUS 2017 - Washington, United States
Duration: Sep 6 2017Sep 9 2017

Other

Other2017 IEEE International Ultrasonics Symposium, IUS 2017
CountryUnited States
CityWashington
Period9/6/179/9/17

Fingerprint

signal processing
bandwidth
suppressors
signal detection
bandpass filters
electric current
seats
brain
high voltages
amplifiers
recording
current density
sensitivity
high resolution
pulses
simulation

Keywords

  • Acoustoelectric (AE) imaging
  • AEI
  • ECG
  • EEG
  • Ultrasound
  • Ultrasound Current Source Density Imaging

ASJC Scopus subject areas

  • Acoustics and Ultrasonics

Cite this

Design considerations and performance of a variable gain, variable bandwidth signal processing circuit for acoustoelectric imaging. / Bera, Tushar Kanti; Ingram, Pier; Qin, Yexian; Furenlid, Lars R; Witte, Russell S.

2017 IEEE International Ultrasonics Symposium, IUS 2017. IEEE Computer Society, 2017. 8092068.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Bera, TK, Ingram, P, Qin, Y, Furenlid, LR & Witte, RS 2017, Design considerations and performance of a variable gain, variable bandwidth signal processing circuit for acoustoelectric imaging. in 2017 IEEE International Ultrasonics Symposium, IUS 2017., 8092068, IEEE Computer Society, 2017 IEEE International Ultrasonics Symposium, IUS 2017, Washington, United States, 9/6/17. https://doi.org/10.1109/ULTSYM.2017.8092068
Bera, Tushar Kanti ; Ingram, Pier ; Qin, Yexian ; Furenlid, Lars R ; Witte, Russell S. / Design considerations and performance of a variable gain, variable bandwidth signal processing circuit for acoustoelectric imaging. 2017 IEEE International Ultrasonics Symposium, IUS 2017. IEEE Computer Society, 2017.
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