Four-dimensional ultrasound current source density imaging of a dipole field
Four-dimensional ultrasound current source density imaging of a dipole field
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DOI：
10.1063/1.3632034
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发表时间：
2011-09-12
影响因子：
4
通讯作者：
Witte, R. S.
中科院分区：
文献类型：
--
作者：
Wang, Z. H.;Olafsson, R.;Witte, R. S.
超声电流源密度成像（UCSDI）可能会改变可兴奋器官（如大脑和心脏）的传统电标测。在这项研究中，我们展示了体积成像的时变电流场通过扫描聚焦超声束和检测声电（AE）相互作用信号。一对电极在填充有0.9%NaCl溶液的特殊成像室中产生交流电流分布。脉冲1 MHz的超声波束扫描附近的源和汇，而AE信号被检测到远程记录电极，导致在时间流逝的体积电影的交流电流分布。(C)2011年美国物理学会。[doi：10.1063/1.3632034]
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. (C) 2011 American Institute of Physics. [doi:10.1063/1.3632034]