Abstract
Ultrasound current source density imaging (UCSDI) potentially transforms conventional electrical mapping of excitable organs, such as the brain and heart. For this study, we demonstrate volume imaging of a time-varying current field by scanning a focused ultrasound beam and detecting the acoustoelectric (AE) interaction signal. A pair of electrodes produced an alternating current distribution in a special imaging chamber filled with a 0.9 NaCl solution. A pulsed 1 MHz ultrasound beam was scanned near the source and sink, while the AE signal was detected on remote recording electrodes, resulting in time-lapsed volume movies of the alternating current distribution.
Original language | English (US) |
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Article number | 113701 |
Journal | Applied Physics Letters |
Volume | 99 |
Issue number | 11 |
DOIs | |
State | Published - Sep 12 2011 |
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)