Feasibility Study of Enhancing Microwave Brain Imaging Using Metamaterials.
We present an approach to enhance microwave brain imaging with an innovative metamaterial (MM) planar design based on a cross-shaped split-ring resonator (SRR-CS). The proposed metasurface is incorporated in different setups, and its interaction with EM waves is studied both experimentally and by using CST Microwave Studio® and is compared to a "no MM" case scenario. We show that the MM can enhance the penetration of the transmitted signals into the human head when placed in contact with skin tissue, acting as an impedance-matching layer. In addition, we show that the MM can improve the transceivers' ability to detect useful "weak" signals when incorporated in a headband scanner for brain imaging by increasing the signal difference from a blood-like dielectric target introduced into the brain volume. Our results suggest that the proposed MM film can be a powerful hardware advance towards the development of scanners for brain haemorrhage detection and monitoring.
['Razzicchia|Eleonora|E|0000-0001-7703-3909', 'Sotiriou|Ioannis|I|0000-0002-0924-9078', 'Cano-Garcia|Helena|H|0000-0002-7128-3859', 'Kallos|Efthymios|E|', 'Palikaras|George|G|', 'Kosmas|Panagiotis|P|0000-0001-9759-2820']
D001921:Brain D003198:Computer Simulation D017097:Electric Impedance D005240:Feasibility Studies D006801:Humans D008872:Microwaves D059906:Neuroimaging
brain imaging metamaterial metasurface cross-shaped split-ring resonators (CS-SRRs) microwave imaging (MWI) microwave tomography (MWT) split-ring resonators (SRRs)