Passive focused monitoring and non-invasive irradiation of head tissue phantoms at microwave frequencies

Karathanasis, KT; Gouzouasis, IA; Karanasiou, IS; Stratakos, G; Uzunoglu, NK

dc.contributor.author	Karathanasis, KT	en
dc.contributor.author	Gouzouasis, IA	en
dc.contributor.author	Karanasiou, IS	en
dc.contributor.author	Stratakos, G	en
dc.contributor.author	Uzunoglu, NK	en
dc.date.accessioned	2014-03-01T02:45:43Z
dc.date.available	2014-03-01T02:45:43Z
dc.date.issued	2008	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/32347
dc.subject	Experimental Tests	en
dc.subject	Hybrid System	en
dc.subject	Microwave Irradiation	en
dc.subject	Penetration Depth	en
dc.subject	Area of Interest	en
dc.subject	Real Time	en
dc.subject.other	Area of interest	en
dc.subject.other	Conductivity measurements	en
dc.subject.other	Conductivity variation	en
dc.subject.other	Contact less	en
dc.subject.other	Electromagnetic energy	en
dc.subject.other	Ellipsoidal cavity	en
dc.subject.other	Focused microwaves	en
dc.subject.other	Human volunteers	en
dc.subject.other	Local variations	en
dc.subject.other	Main module	en
dc.subject.other	Matching layer	en
dc.subject.other	Non-invasive	en
dc.subject.other	Penetration depth	en
dc.subject.other	Radiometric temperature	en
dc.subject.other	Real time	en
dc.subject.other	Temperature increase	en
dc.subject.other	Tissue phantom	en
dc.subject.other	Bioinformatics	en
dc.subject.other	Irradiation	en
dc.subject.other	Radiometry	en
dc.subject.other	Microwave irradiation	en
dc.title	Passive focused monitoring and non-invasive irradiation of head tissue phantoms at microwave frequencies	en
heal.type	conferenceItem	en
heal.identifier.primary	10.1109/BIBE.2008.4696770	en
heal.identifier.secondary	http://dx.doi.org/10.1109/BIBE.2008.4696770	en
heal.identifier.secondary	4696770	en
heal.publicationDate	2008	en
heal.abstract	In this work, a novel hybrid system able to provide focused microwave radiometric temperature and/or conductivity measurements and hyperthermia treatment via microwave irradiation is experimentally tested. The main module of the system is an ellipsoidal cavity, which provides the appropriate focusing of the electromagnetic energy on the area of interest. The system has been used the past few years in experiments with different configuration setups including phantom, animal and human volunteer measurements yielding promising outcome. New aspects of our research are presented in this paper regarding both radiometry and hyperthermia modules. On one hand, it is examined whether the system is capable of sensing real time progressive local variations of temperature and/or conductivity in customized phantom setups; on the other, the focusing attributes of the system are explored for different positions and types of phantoms used for hyperthermia. The results show that the system is able to detect local concentrated gradual temperature and conductivity variations expressed as an increase of the output radiometric voltage. When contactless focused hyperthermia is performed, the results show significant temperature increase at specific phantom areas. In this case, the effect of a dielectric matching layer placed around the phantoms has been also tested resulting in the enhancement of the energy penetration depth.	en
heal.journalName	8th IEEE International Conference on BioInformatics and BioEngineering, BIBE 2008	en
dc.identifier.doi	10.1109/BIBE.2008.4696770	en