Developing Artefact Removal Algorithms to Process Data from a Microwave Imaging Device for Haemorrhagic Stroke Detection

In this paper, we present an investigation of different artefact removal methods for ultra-wideband Microwave Imaging (MWI) to evaluate and quantify current methods in a real environment through measurements using an MWI device. The MWI device measures the scattered signals in a multi-bistatic fashi...

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Bibliographic Details
Main Authors: Behnaz Sohani, James Puttock, Banafsheh Khalesi, Navid Ghavami, Mohammad Ghavami, Sandra Dudley, Gianluigi Tiberi
Format: Article
Language:English
Published: MDPI AG 2020-09-01
Series:Sensors
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Online Access:https://www.mdpi.com/1424-8220/20/19/5545
Description
Summary:In this paper, we present an investigation of different artefact removal methods for ultra-wideband Microwave Imaging (MWI) to evaluate and quantify current methods in a real environment through measurements using an MWI device. The MWI device measures the scattered signals in a multi-bistatic fashion and employs an imaging procedure based on Huygens principle. A simple two-layered phantom mimicking human head tissue is realised, applying a cylindrically shaped inclusion to emulate brain haemorrhage. Detection has been successfully achieved using the superimposition of five transmitter triplet positions, after applying different artefact removal methods, with the inclusion positioned at 0<inline-formula><math display="inline"><semantics><msup><mrow></mrow><mo>°</mo></msup></semantics></math></inline-formula>, 90<inline-formula><math display="inline"><semantics><msup><mrow></mrow><mo>°</mo></msup></semantics></math></inline-formula>, 180<inline-formula><math display="inline"><semantics><msup><mrow></mrow><mo>°</mo></msup></semantics></math></inline-formula>, and 270<inline-formula><math display="inline"><semantics><msup><mrow></mrow><mo>°</mo></msup></semantics></math></inline-formula>. The different artifact removal methods have been proposed for comparison to improve the stroke detection process. To provide a valid comparison between these methods, image quantification metrics are presented. An “ideal/reference” image is used to compare the artefact removal methods. Moreover, the quantification of artefact removal procedures through measurements using MWI device is performed.
ISSN:1424-8220