Investigation of the effect of dehydration on tissue dielectric properties in ex vivo measurements
Dwyer, Róisín M.
MetadataShow full item record
This item's downloads: 0 (view details)
Shahzad, Atif; Khan, Sonja; Jones, Marggie; Dwyer, Roisin M; O’Halloran, Martin (2017). Investigation of the effect of dehydration on tissue dielectric properties in ex vivo measurements. Biomedical Physics & Engineering Express 3 (4),
This paper discusses the impact of tissue dehydration on the dielectric properties of excised tissue samples. The effect of dehydration on the tissue surface has been characterized as a function of time after excision on freshly excised mouse liver. The dielectric properties of liver were measured over the frequency range of 500 MHz-20 GHz using an open-ended coaxial probe. Tissue samples were obtained from 7 athymic BALB/c Nude mice, and measurements were performed over the first 3.5 h post-excision at the tissue surface and in the middle of the sample (accessed via a small incision). The samples were kept in sealed containers between measurements to avoid excessive dehydration. The measured dielectric data show a change of more than 25% in both the real and imaginary parts of complex permittivity over 3.5 h after excision. Results indicate the impact of tissue dehydration on the dielectric properties, and signify the importance of considering controls in the experimental design of ex vivo dielectric measurements.
Showing items related by title, author, creator and subject.
Salahuddin, Saqib; La Gioia, Alessandra; Shahzad, Atif; Elahi, Muhammad Adnan; Kumar, Arun; Kilroy, David; Porter, Emily; O'Halloran, Martin (IOP Publishing, 2018-02-07)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 ...
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 ...
A three-scale finite element investigation into the effects of tissue mineralisation and lamellar organisation in human cortical and trabecular bone Vaughan, Ted J.; McCarthy, Conor T.; McNamara, Laoise M. (Elsevier, 2012-03-20)Bone is an exceptional material that is lightweight for efficient movement but also exhibits excellent strength and stiffness imparted by a composite material of organic proteins and mineral crystals that are intricately ...