Browsing by Author "La Gioia, Alessandra"
Now showing items 1-17 of 17
-
Accurate dielectric characterisation of biological tissues in the microwave range using the open-ended coaxial probe technique
La Gioia, Alessandra (NUI Galway, 2019-12-19)Accurate knowledge of the dielectric properties of biological tissue samples is fundamental in the design of novel electromagnetic-based medical devices. Biological tissue samples are typically characterised dielectrically ... -
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 ... -
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 ... -
Comparison of in-vivo and ex-vivo dielectric properties of biological tissues
Salahuddin, Saqib; La Gioia, Alessandra; Elahi, Muhammad Adnan; O'Halloran, Martin; Shahzad, Atif (Curran Associates Proceedings, 2017-09-11)Accurate knowledge of the dielectric properties of biological tissues are crucial for various applications such as assessment of specific absorption rate and safety of electromagnetic medical devices. Most of the ... -
Early-stage dielectric characterisation of renal cell carcinoma for positive surgical margin detection
La Gioia, Alessandra; Elahi, Adnan; Bottiglieri, Anna; Istuk, Niko; Dowling, Catherine; D'Arcy, Frank; O'Halloran, Martin; Porter, Emily (Institute of Electrical and Electronics Engineers, 2019-03-31)Partial nephrectomy is preferred to total nephrectomy tor clinically localised renal cell carcinoma. In order to minimise the risk of local tumour recurrence after partial nephrectomy, ideally, the surgical margins of the ... -
Examination of the sensing radius of open-ended coaxial probes in dielectric measurements of biological tissues
La Gioia, Alessandra; Porter, Emily; O'Halloran, Martin (Institute of Electrical and Electronics Engineers, 2017-07-09)A number of emerging electromagnetic diagnostic and therapeutic devices are designed based on estimates of benign and malignant tissue dielectric properties at different frequencies and temperatures. Accurate tissue ... -
Impact of histology region size on measured dielectric properties of biological tissues
Porter, Emily; La Gioia, Alessandra; O'Halloran, Martin (Institute of Electrical and Electronics Engineers, 2017-05-22)Accurate knowledge of the dielectric properties of biological tissues is necessary for the design and development of electromagnetic medical technologies. Both electromagnetic diagnostic and therapeutic techniques depend ... -
Impact of radial heterogeneities of biological tissues on dielectric measurements
La Gioia, Alessandra; Porter, Emily; Salahuddin, Saqib; O'Halloran, Martin (Curran Associates Proceedings, 2017-09-11)The dielectric properties of biological tissues are relevant in dosimetry studies and in radio-frequency and microwave medical applications. Broadband tissue dielectric data is commonly acquired using open-ended coaxial ... -
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 ... -
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 ... -
Modelling the sensing radius of a coaxial probe for dielectric characterisation of biological tissues
La Gioia, Alessandra; O'Halloran, Martin; Porter, Emily (Institute of Electrical and Electronics Engineers, 2018-08-22)The open-ended coaxial probe is the most common measurement tool used to dielectrically characterize biological tissues. Most healthy and malignant biological tissues are macroscopically heterogeneous, with the exception ... -
Open-ended coaxial probe technique for dielectric measurement of biological tissues: challenges and common practices
La Gioia, Alessandra; Porter, Emily; Merunka, Ilja; Shahzad, Atif; Salahuddin, Saqib; Jones, Marggie; O’Halloran, Martin (MDPI AG, 2018-06-05)Electromagnetic (EM) medical technologies are rapidly expanding worldwide for both diagnostics and therapeutics. As these technologies are low-cost and minimally invasive, they have been the focus of significant research ... -
Predicting the sensing radius of a coaxial probe based on the probe dimensions
La Gioia, Alessandra; Santorelli, Adam; O'Halloran, Martin; Porter, Emily (Institute of Electrical and Electronics Engineers, 2020-05-19)The coaxial probe technique is used to acquire the dielectric properties of biological tissues in the microwave frequency range. To dielectrically characterize heterogeneous samples, the sensing radius of the probe must ... -
Quantification of the sensing radius of a coaxial probe for accurate interpretation of heterogeneous tissue dielectric data
La Gioia, Alessandra; Salahuddin, Saqib; O'Halloran, Martin; Porter, Emily (Institute of Electrical and Electronics Engineers, 2018-05-31)Accurate tissue dielectric measurements are crucial for the development of electromagnetic diagnostic and therapeutic devices that are designed based on estimates of the dielectric properties of diseased and healthy tissues. ... -
Sensing radius of an open-ended coaxial probe for dielectric measurement of tissues: Calculation with relative permittivity versus conductivity
La Gioia, Alessandra; O'Halloran, Martin; Porter, Emily (Institute of Electrical and Electronics Engineers, 2019-03-09)The dielectric properties of biological tissues are important parameters used in the design and optimisation of electromagnetic-based medical technologies. Typically, these parameters are measured ex-vivo using the open-ended ... -
Significance of heterogeneities in accurate dielectric measurements of biological tissues
Porter, Emily; La Gioia, Alessandra; Elahi, Muhammad A.; O'Halloran, Martin (Union Radio-Scientifique Internationale (URSI), 2017-08-19)Accurate knowledge of the dielectric properties of biological tissues is necessary for the design and development of electromagnetic medical technologies; these properties quantify the accuracy and efficacy of system ...