Browsing Electrical and Electronic Engineering (Scholarly Articles) by Author "O'Halloran, Martin"
Now showing items 1-20 of 28
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Adaptive artifact removal for selective multistatic microwave breast imaging signals
Elahi, Muhammad Adnan; Glavin, Martin; Jones, Edward; O'Halloran, Martin (Elsevier, 2017-02-01)Microwave imaging is one of the most promising alternative breast imaging modalities. Early-stage artifact removal is an important signal processing component of a microwave breast imaging system. In this paper, a monostatic ... -
An anatomically accurate dielectric profile of the porcine kidney
Salahuddin, Saqib; La Gioia, Alessandra; Shahzad, Atif; Elahi, Muhammad Adnan; Kumar, Arun; Kilroy, David; Porter, Emily; O'Halloran, Martin (IOP Publishing, 2018-02-26)Microwave ablation is a promising treatment for kidney cancer. Accurate knowledge of the dielectric properties of biological tissues is vital for quantifying the safety, reliability and accuracy of ablation, among other ... -
Anatomically and dielectrically realistic microwave head phantom with circulation and reconfigurable lesions
McDermott, Barry; Porter, Emily; Santorelli, Adam; Divilly, Brendan; Morris, Liam; Jones, Marggie; McGinley, Brian; O'Halloran, Martin (The Electromagnetics Academy, 2017)Phantoms provide valuable test platforms for developing medical devices. Solid materials in particular allow fabrication of stable and robust models. This paper presents a novel, anatomically realistic, multi-layered head ... -
Anthropomorphic calcaneus phantom for microwave bone imaging applications
Amin, Bilal; Shahzad, Atif; Kelly, Daniel; O'Halloran, Martin; Elahi, Adnan (Institute of Electrical and Electronics Engineers, 2020-10-09)Recent studies have found a significant dielectric contrast between healthy and osteoporotic human trabecular bones. This dielectric contrast can be exploited by microwave imaging for monitoring human bone health. The ... -
Brain haemorrhage detection using a SVM classifier with electrical impedance tomography measurement frames
McDermott, Barry; O'Halloran, Martin; Porter, Emily; Santorelli, Adam (Public Library of Science, 2018-07-12)Brain haemorrhages often require urgent treatment with a consequent need for quick and accurate diagnosis. Therefore, in this study, we investigate Support Vector Machine (SVM) classifiers for detecting brain haemorrhages ... -
Challenges of post-measurement histology for the dielectric characterisation of heterogeneous biological tissues
La Gioia, Alessandra; O'Halloran, Martin; Porter, Emily (MDPI, 2020-06-09)The dielectric properties of biological tissues are typically measured using the open-ended coaxial probe technique, which is based on the assumption that the tissue sample is homogeneous. Therefore, for heterogeneous ... -
Dielectric characterization of diseased human trabecular bones at microwave frequency
Amin, Bilal; Shahzad, Atif; Farina, Laura; Parle, Eoin; McNamara, Laoise; O'Halloran, Martin; Elahi, Muhammad Adnan (Elsevier, 2020-02-07)The objective of this study is to determine whether in vitro dielectric properties of human trabecular bones, can distinguish between osteoporotic and osteoarthritis patients' bone samples. Specifically this study enlightens ... -
Dielectric characterization of ex vivo ovine and human adrenal glands for microwave thermal ablation applications
Bottiglieri, Anna; Shahzad, Atif; Donlon, Padraig; Dennedy, Micheal Conall; Lowery, Aoife; O'Halloran, Martin; Farina, Laura (Institute of Electrical and Electronics Engineers, 2021-01-15)Historically, adrenal glands diseases causing hypertension, such as Primary Aldosteronism (PA), have been treated through pharmacotherapy or surgical resection. Given the shortcomings of the available treatment options, ... -
Effect of logarithmic and linear frequency scales on parametric modelling of tissue dielectric data
Salahuddin, Saqib; Porter, Emily; Meaney, Paul M.; O'Halloran, Martin (IOP Publishing, 2017-02-03)The dielectric properties of biological tissues have been studied widely over the past half-century. These properties are used in a vast array of applications, from determining the safety of wireless telecommunication ... -
Effects of standard coagulant agents on the dielectric properties of fresh human blood
Salahuddin, Saqib; O'Halloran, Martin; Porter, Emily; Farrugia, Lourdes; Bonello, Julian; Sammut, Charles V.; Wismayer, P. Schembri (Institute of Electrical and Electronics Engineers, 2017-11-27)In this paper, the effects of coagulation and temperature on the dielectric properties of human blood are investigated over the frequency range of 400 MHz - 20 GHz using freshly extracted blood samples. The dielectric ... -
A feasibility study on microwave imaging of bone for osteoporosis monitoring
Amin, Bilal; Shahzad, Atif; Crocco, Lorenzo; Wang, Mengchu; O'Halloran, Martin; González-Suárez, Ana; Elahi, Muhammad Adnan (Springer, 2021-03-30)The dielectric properties of bones are found to be influenced by the demineralisation of bones. Therefore, microwave imaging (MWI) can be used to monitor in vivo dielectric properties of human bones and hence aid in the ... -
Gamma band neural stimulation in humans and the promise of a new modality to prevent and treat Alzheimer's disease
McDermott, Barry; Porter, Emily; Hughes, Diarmaid; McAuley, Brian; Lang, Mark; O'Halloran, Martin; Jones, Marggie (IOS Press, 2018-07-19)Existing treatments for Alzheimer s Disease have questionable efficacy with a need for research into new and more effective therapies to both treat and possibly prevent the condition. This review examines a novel therapeutic ... -
Heparin as an anticoagulant for the dielectric measurement of blood
Dunne, Eoghan; O'Halloran, Martin; Porter, Emily; Bonello, Julian; Farrugia, Lourdes; Sammut, Charles V.; Schembri-Wismayer, Pierre (Institute of Electrical and Electronics Engineers, 2019-01-23)Testing blood ex-vivo allows physicians to gain an understanding of what is happening within the human body. Once blood is extracted from the body, it begins to clot. This process can affect the outcome of blood tests, ... -
Image-based classification of bladder state using electrical impedance tomography
Dunne, Eoghan; Santorelli, Adam; McGinley, Brian; Leader, Geraldine; O'Halloran, Martin; Porter, Emily (IOP Publishing, 2018-12-03)Objective: In this study, we examine the potential of using machine learning classification to determine the bladder state ( not full , full ) with electrical impedance tomography (EIT) images of the pelvic region. Accurate ... -
Investigation of histology radius for dielectric characterisation of heterogeneous materials
La Gioia, Alessandra; O'Halloran, Martin; Elahi, Muhammad Adnan; Porter, Emily (Institute of Electrical and Electronics Engineers, 2018-07-13)Knowledge of the dielectric properties of biological tissues is fundamental in the design of novel electromagnetic-based medical devices. Tissue dielectric properties are typically measured using the open-ended coaxial ... -
Investigation of histology region in dielectric measurements of heterogeneous tissues
Porter, Emily; O'Halloran, Martin (Institute of Electrical and Electronics Engineers (IEEE), 2017-08-17)The dielectric properties of tissues are the key parameters in electromagnetic medical technologies. Despite the apparent simplicity of the dielectric measurement process, reported data have been inconsistent for heterogeneous ... -
An investigation of the variation of dielectric properties of ovine lung tissue with temperature
Bonello, Julian; Elahi, Muhammad Adnan; Porter, Emily; O'Halloran, Martin; Farrugia, Lourdes; Sammut, Charles V. (IOP Publishing, 2019-06-24)Presently, lung cancer is the leading cause of cancer deaths. Microwave thermal ablation is commonly used for the treatment of lung cancer. During microwave ablation treatment, changing temperatures (up to 100 °C) cause ... -
Microwave bone imaging: A preliminary investigation on numerical bone phantoms for bone health monitoring
Amin, Bilal; Shahzad, Atif; O'Halloran, Martin; Elahi, Muhammad Adnan (MDPI, 2020-11-05)Microwave tomography (MWT) can be used as an alternative modality for monitoring human bone health. Studies have found a significant dielectric contrast between healthy and diseased human trabecular bones. A set of diverse ... -
Minimum information for dielectric measurements of biological tissues (MINDER): A framework for repeatable and reusable data
Porter, Emily; La Gioia, Alessandra; Salahuddin, Saqib; Decker, Stefan; Shahzad, Atif; Elahi, M. Adnan; O'Halloran, Martin; Beyan, Oya (Wiley, 2017-11-13)The dielectric properties of biological tissues characterise the interaction of human tissues with electromagnetic (EM) fields. Accurate knowledge of the dielectric properties of tissues are vital in EM‐based therapeutic ... -
Modeling of the dielectric properties of biological tissues within the histology region
Porter, Emily; La Gioia, Alessandra; Santorelli, Adam; O'Halloran, Martin (Institute of Electrical and Electronics Engineers (IEEE), 2017-11-27)The dielectric properties of biological tissues characterize the interaction of electromagnetic fields with the human body. As such, accurate knowledge of these properties is vital to the design and development of ...