Analysis of energy coupling into spheroidal ferritic implants for hyperthermia applications

Cottis, PG; Melas, AI; Uzunoglu, NK

dc.contributor.author	Cottis, PG	en
dc.contributor.author	Melas, AI	en
dc.contributor.author	Uzunoglu, NK	en
dc.date.accessioned	2014-03-01T01:07:48Z
dc.date.available	2014-03-01T01:07:48Z
dc.date.issued	1990	en
dc.identifier.issn	0018-9480	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/10180
dc.subject	Boundary Condition	en
dc.subject	Electromagnetic Field	en
dc.subject	Power Density	en
dc.subject	System of Equations	en
dc.subject.classification	Engineering, Electrical & Electronic	en
dc.subject.other	Ferrites	en
dc.subject.other	Microwaves	en
dc.subject.other	Spheres	en
dc.subject.other	Electromagnetic Coupling	en
dc.subject.other	Ferritic Implants	en
dc.subject.other	Biomedical Engineering	en
dc.title	Analysis of energy coupling into spheroidal ferritic implants for hyperthermia applications	en
heal.type	journalArticle	en
heal.identifier.primary	10.1109/22.58652	en
heal.identifier.secondary	http://dx.doi.org/10.1109/22.58652	en
heal.language	English	en
heal.publicationDate	1990	en
heal.abstract	The coupling of energy of RF power into lossy tissues using a needle-shaped ferromagnetic implant excited by an externally applied current loop is analyzed theoretically. The ferritic implant is assumed to be of prolate spheroidal shape, while the tissue medium is modeled as a lossy sphere. The electromagnetic fields inside the ferritic implant, the surrounding lossy tissue, and the free space are appropriately expressed in terms of spherical and spheroidal wave functions. Application of the boundary conditions results in an infinite system of equations for the unknown field expansion coefficients. This system is truncated and solved and the electromagnetic field is computed numerically. Absorbed power density inside the implant and the surrounding medium is computed, and the efficiency of the method in producing in-depth energy deposition is examined.	en
heal.publisher	IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC	en
heal.journalName	IEEE Transactions on Microwave Theory and Techniques	en
dc.identifier.doi	10.1109/22.58652	en
dc.identifier.isi	ISI:A1990DU84900016	en
dc.identifier.volume	38	en
dc.identifier.issue	9	en
dc.identifier.spage	1259	en
dc.identifier.epage	1267	en