Exploring the enhancement of the imaging properties of a microwave radiometry system for possible functional imaging using a realistic human head model

Gouzouasis, IA; Karanasiou, IS; Uzunoglu, NK

dc.contributor.author	Gouzouasis, IA	en
dc.contributor.author	Karanasiou, IS	en
dc.contributor.author	Uzunoglu, NK	en
dc.date.accessioned	2014-03-01T01:30:29Z
dc.date.available	2014-03-01T01:30:29Z
dc.date.issued	2009	en
dc.identifier.issn	1748-0221	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/19599
dc.subject	Models and simulations	en
dc.subject	Simulation methods and programs	en
dc.subject.classification	Instruments & Instrumentation	en
dc.subject.other	HUMAN VISUAL-CORTEX	en
dc.subject.other	TEMPERATURE	en
dc.subject.other	BRAIN	en
dc.title	Exploring the enhancement of the imaging properties of a microwave radiometry system for possible functional imaging using a realistic human head model	en
heal.type	journalArticle	en
heal.identifier.primary	10.1088/1748-0221/4/06/P06006	en
heal.identifier.secondary	http://dx.doi.org/10.1088/1748-0221/4/06/P06006	en
heal.identifier.secondary	P06006	en
heal.language	English	en
heal.publicationDate	2009	en
heal.abstract	During the past four years, a novel Microwave Radiometry Imaging System (MiRaIS) has been developed and experimentally tested for brain activation imaging via contactless measurements. Through analytical theoretical and experimental analysis, the system seems to be able to detect any change of the product of temperature (T) and conductivity (σ), that is change of the product T*σ. However, in order to be able to study any specific brain area of interest using the proposed system, its focusing properties need to be improved. The present work investigates the use of dielectric materials as filling material inside the whole ellipsoid geometry or as matching layer around the head. Aim of both ideas is to improve the matching conditions on the skin-air interface. The results from the simulations verified the validity of this approach and also that focusing points appear to be sensitive to the spatial movement of the head. For the simulations, a commercial FDTD tool is used, along with an anatomically correct human head model developed from MRI scans. SAR distributions are also calculated inside the head revealing the potential implementation of hyperthermia treatment with the proposed system. © 2009 IOP Publishing Ltd and SISSA.	en
heal.publisher	IOP PUBLISHING LTD	en
heal.journalName	Journal of Instrumentation	en
dc.identifier.doi	10.1088/1748-0221/4/06/P06006	en
dc.identifier.isi	ISI:000267942500015	en
dc.identifier.volume	4	en
dc.identifier.issue	6	en