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A flexible low-cost, high-precision, single interface electrical impedance tomography system for breast cancer detection using FPGA

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journal contribution
posted on 2023-06-08, 12:18 authored by Ali Zarafshani, Nicolas Huber, Nevis Béqo, Benjamin Tunstall, Gerald Sze, Chris ChatwinChris Chatwin, Wei Wang
Typically, in multi-frequency Electrical Impedance Tomography (EIT) systems, a current is applied and the voltages developed across the subject are detected. However, due to the complexity of designing stable current sources, there has been mention in the literature of applying a voltage to the subject whilst measuring the consequent current flow. This paper presents a comparative study between the two techniques in a novel design suitable for the detection of breast cancers. The suggested instrument borrows the best features of both the injection of current and the application of voltage, circumventing their limitations. Furthermore, the system has a common patient-electrode interface for both methodologies, whilst the control of the system and the necessary signal processing is carried out in a field programmable gate array (FPGA). Through this novel system, wide-bandwidth, low-noise, as well as high-speed (frame rate) can be achieved.

History

Publication status

  • Published

File Version

  • Published version

Journal

Journal of Physics: Conference Series

ISSN

1742-6588

Publisher

IOP Science

Issue

1

Volume

224

Page range

012169

Event name

14th International Conference on Electrical Bioimpedance, Held in Conjunction with the 11th Conference on Biomedical Applications of EIT, ICEBI and EIT 2010;Gainesville, FL

Event location

Gainesville, FL, USA

Event type

conference

Event date

4/4/2012 to 8/4/2012

Department affiliated with

  • Engineering and Design Publications

Full text available

  • Yes

Peer reviewed?

  • Yes

Legacy Posted Date

2012-08-30

First Open Access (FOA) Date

2016-03-22

First Compliant Deposit (FCD) Date

2016-08-17