Local hyperthermia based on soft heating method utilizing temperature-sensitive ferrite rod

Author

Matsuki, H. ; Satoh, T. ; Murakami, K. ; Hoshino, T. ; Yanada, T. ; Kikuchi, S.

Author_Institution

Dept. of Electr. Eng., Tohoku Univ., Sendai, Japan

Volume

26

Issue

5

fYear

1990

fDate

9/1/1990 12:00:00 AM

Firstpage

1551

Lastpage

1553

Abstract

A description is given of soft heating, an induction heating method which uses an implantable heater consisting of temperature-sensitive magnetic materials and a metal ring. Local hyperthermia based on soft heating is experimentally shown to be effective. A phantom test reveals that a piece of heater supplies sufficient heat to surrounding tissues whose volume is 1 cm³. Wister rats and Walker Carcinosarcoma 256 were used in an animal experiment. Tumors in five rats vanished almost completely after four heating treatments. The accuracy of the regulation is ±0.2°C near the Curie temperature, which can be readily varied

Keywords

biothermics; ferrites; induction heating; patient treatment; Curie temperature; Walker Carcinosarcoma 256; Wister rats; animal experiment; implantable heater; induction heating; local hyperthermia; metal ring; phantom test; soft heating method; temperature-sensitive ferrite rod; temperature-sensitive magnetic materials; tissues; tumors; Animals; Heat treatment; Heating; Hyperthermia; Imaging phantoms; Magnetic materials; Neoplasms; Rats; Temperature; Testing;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.104442

Filename

104442