A feasibility study of a rotary planar electrode array for electrical impedance mammography using a digital breast phantom

Zhang, X, Chatwin, C and Barber, D C (2015) A feasibility study of a rotary planar electrode array for electrical impedance mammography using a digital breast phantom. Physiological Measurement, 36 (6). pp. 1311-1335. ISSN 0967-3334

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Abstract

A feasibility study of an electrical impedance mammography (EIM) system
with a rotary planar electrode array, named RPEIM, is presented. The RPEIM
system is an evolution of the Sussex MK4 system, which is a prototype
instrument for breast cancer detection. Comparing it with the other planar
electrode EIM systems, the rotation feature enables a dramatic increase in
the number of independent measurements. To assist impedance evaluation
exploiting electrode array rotation, a synchronous mesh method is proposed.
Using the synchronous mesh method, the RPEIM system is shown to
have superior performance in image accuracy, spatial resolution and noise
tolerance over the MK4 system. To validate the study, we report simulations
based on a close-to-realistic 3D digital breast phantom, which comprises of:
skin, nipple, ducts, acinus, fat and tumor. A digital breast phantom of a real
patient is constructed, whose tumor was detected using the MK4 system. The
reconstructed conductivity image of the breast phantom indicates that the
breast phantom is a close replica of the patient’s real breast as assessed by the
MK4 system in a clinical trial. A comparison between the RPEIM system and
the MK4 system is made based on this phantom to assess the advantages of
the RPEIM system.

Item Type: Article
Keywords: breast cancer detection, breast phantom, electrical impedance mammography, electrical impedance tomography
Schools and Departments: School of Engineering and Informatics > Engineering and Design
Subjects: A General Works
Q Science
R Medicine > R Medicine (General) > R856 Biomedical engineering. Electronics. Instrumentation
T Technology
Depositing User: Chris Chatwin
Date Deposited: 28 May 2015 08:50
Last Modified: 06 Mar 2017 11:29
URI: http://sro.sussex.ac.uk/id/eprint/54160

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