Magnetic fluid weight density estimation in large cavities by a needle-type GMR sensor

C. P. Gooneratne, M. Iwahara, M. Kakikawa, S. Yamada, A. Kurnicki, S. C. Mukhopadhyay

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contributionpeer-review

2 Citations (Scopus)


During hyperthermia therapy for cancer treatment magnetic fluid is injected into the tumor. Hyperthermia therapy exploits the fact that cancer cells are more sensitive to heat than healthy cells. Generally all parameters except the magnetic fluid weight density are known in the specific heat equation which governs the heat given in hyperthermia therapy to destroy cancer cells. Hence, accurate estimation of magnetic fluid weight density inside the body is critical for successful treatment. A unique needle-type GMR sensor is fabricated for inserting into the body in a low-invasive way. This paper presents analytical analysis and experimental results obtained by estimating magnetic fluid weight density in large cavities by the fabricated needle-type GMR sensor.

Original languageEnglish
Title of host publicationProceedings of the Third International Conference on Sensing Technology
Subtitle of host publicationNational Cheng-Kung University, Tainan, Taiwan, November 30 - December 3, 2008
EditorsS. C. Mukhopadhyay, G. Sen Gupta, Ray Y. M. Huang
Place of PublicationPiscataway, NJ
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Number of pages6
ISBN (Print)9781424421770
Publication statusPublished - 2008
Externally publishedYes
Event3rd International Conference on Sensing Technology, ICST - 2008 - Tainan, Taiwan
Duration: 30 Nov 20083 Dec 2008


Other3rd International Conference on Sensing Technology, ICST - 2008


  • Demagnetizing factor
  • GMR sensor
  • Magnetic nanoparticles
  • Relative permeability
  • Tumor


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