Four-channel current switching device to enable multi-electrode magnetic resonance current density imaging

被引：1

作者：

Bos, Noah J. ^{[1
]}

Chauhan, Munish ^{[2
]}

Sadleir, Rosalind J. ^{[2
]}

McEwan, Alistair ^{[3
]}

Minhas, Atul S. ^{[1
]}

机构：

[1] Macquarie Univ, Sch Engn, Sydney, NSW, Australia

[2] Arizona State Univ, Ira A Fulton Sch Engn, Tempe, AZ USA

[3] Univ Sydney, Sch Biomed Engn, Sydney, NSW, Australia

来源：

2021 43RD ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE & BIOLOGY SOCIETY (EMBC) | 2021年

关键词：

D O I：

10.1109/EMBC46164.2021.9630962

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 ;

摘要：

Neurostimulation with multiple scalp electrodes has shown enhanced effects in recent studies. However, visualizations of stimulation-induced internal current distributions in brain is only possible through simulated current distributions obtained from computer model of human head. While magnetic resonance current density imaging (MRCDI) has a potential for direct in-vivo measurement of currents induced in brain with multi-electrode stimulation, existing MRCDI methods are only developed for two-electrode neurostimulation. A major bottleneck is the lack of a current switching device which is typically used to convert the DC current of neurostimulation devices into user-defined waveforms of positive and negative polarity with delays between them. In this work, we present a design of a four-electrode current switching device to enable simultaneous switching of current flowing through multiple scalp electrodes.

引用

页码：4068 / 4071

页数：4

共 9 条

[1] Low-Frequency Conductivity Tensor Imaging of the Human Head In Vivo Using DT-MREIT: First Study [J].