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Sensors 2018, 18(11), 3852; https://doi.org/10.3390/s18113852

Three-Dimensional Holographic Electromagnetic Imaging for Accessing Brain Stroke

1
Department of Biomedical Engineering, School of Instrument Science and Opto-Electronics Engineering, Hefei University of Technology, Hefei 230009, China
2
Institute of Biomedical Technologies, Auckland University of Technology, Auckland 1001, New Zealand
Received: 15 September 2018 / Revised: 7 November 2018 / Accepted: 8 November 2018 / Published: 9 November 2018
(This article belongs to the Special Issue Sensors Signal Processing and Visual Computing)
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Abstract

The authors recently developed a two-dimensional (2D) holographic electromagnetic induction imaging (HEI) for biomedical imaging applications. However, this method was unable to detect small inclusions accurately. For example, only one of two inclusions can be detected in the reconstructed image if the two inclusions were located at the same XY plane but in different Z-directions. This paper provides a theoretical framework of three-dimensional (3D) HEI to accurately and effectively detect inclusions embedded in a biological object. A numerical system, including a realistic head phantom, a 16-element excitation sensor array, a 16-element receiving sensor array, and image processing model has been developed to evaluate the effectiveness of the proposed method for detecting small stroke. The achieved 3D HEI images have been compared with 2D HEI images. Simulation results show that the 3D HEI method can accurately and effectively identify small inclusions even when two inclusions are located at the same XY plane but in different Z-directions. This preliminary study shows that the proposed method has the potential to develop a useful imaging tool for the diagnosis of neurological diseases and injuries in the future. View Full-Text
Keywords: electromagnetic induction imaging; magnetic induction tomography; sensor array; brain stroke; dielectric properties electromagnetic induction imaging; magnetic induction tomography; sensor array; brain stroke; dielectric properties
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Wang, L. Three-Dimensional Holographic Electromagnetic Imaging for Accessing Brain Stroke. Sensors 2018, 18, 3852.

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