title: Four-dimensional ultrasound current source density imaging of a dipole field.
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.
authors: Z H
authors: ZH
authors: Wang
authors: R
authors: R
authors: Olafsson
authors: P
authors: P
authors: Ingram
authors: Q
authors: Q
authors: Li
authors: Y
authors: Y
authors: Qin
authors: R S
authors: RS
authors: Witte