Accuracy improvement of wireless temperature technique by rotary scan for hyperthermia using ferromagnetic implant

Loi Tonthat, Hajime Saito, Ryuhei Miyamoto, Masafumi Suzuki, Noboru Yoshimura, Kazutaka Mitobe

Research output: Contribution to journalComment/debatepeer-review

Abstract

Soft-heating method is one type of hyperthermia that necrotizes malignant tumors in cancer treatment by means of heat generated by a ferromagnetic material. The magnetic permeability of ferromagnetic particle decreases immediately when its temperature increases over the Curie point (43°C). Therefore, we can concurrently use the ferromagnetic particles as a thermal probe for wireless temperature measurement during hyperthermia treatment. A challenge remains when dealing with body movement artifact as the relative position between the detection coil and the material is fluctuated by breathing or beating of the heart. As a result, the accuracy of temperature detection decreases. In this report we suggest and verify the validity of the new inspection system for the body movement artifact removal by regularly circling a unit of the magnetic field supply coil and the detection coil around the upper surface of the tumor region.

Original languageEnglish
Pages (from-to)O-90-O-91
JournalTransactions of Japanese Society for Medical and Biological Engineering
Volume52
DOIs
Publication statusPublished - 2014 Aug 17
Externally publishedYes

Keywords

  • Body movement artifact
  • Ferromagnetic implant
  • Hyperthermia
  • Rotary scan
  • Wireless temperature measurement

ASJC Scopus subject areas

  • Biomedical Engineering

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