Abstract
Noninvasive imaging of physiologic currents in the body is limited by poor spatial resolution due to the ambiguous conductivity distribution between the current sources and recording electrodes. Acoustoelectric imaging (AEI), based on the interaction between pressure and resistivity, provides higher spatial resolution. Although we have demonstrated AEI of the cardiac activation wave in the live rabbit heart, weak physiologic currents (e.g., in the heart or brain < 1 μV) and ultrasound (US) pulses of balanced shape (zero mean) make detection especially challenging. This study investigates the use of standard US transducers with coded excitation with optimized inverse filter to produce quasi-unipolar pulses that amplify the AE signal.
Original language | English (US) |
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Title of host publication | 2017 IEEE International Ultrasonics Symposium, IUS 2017 |
Publisher | IEEE Computer Society |
ISBN (Electronic) | 9781538633830 |
DOIs | |
State | Published - Oct 31 2017 |
Event | 2017 IEEE International Ultrasonics Symposium, IUS 2017 - Washington, United States Duration: Sep 6 2017 → Sep 9 2017 |
Other
Other | 2017 IEEE International Ultrasonics Symposium, IUS 2017 |
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Country | United States |
City | Washington |
Period | 9/6/17 → 9/9/17 |
ASJC Scopus subject areas
- Acoustics and Ultrasonics