Inscrição na biblioteca: Guest

ISSN Online: 2377-424X

ISBN Print: 978-1-56700-474-8

ISBN Online: 978-1-56700-473-1

International Heat Transfer Conference 16
August, 10-15, 2018, Beijing, China

NEAR-INFRARED MEASUREMENT OF WATER TEMPERATURE AROUND GEL DROPLETS CONTAINING MICRO-MAGNETIC PARTICLES UNDER INDUCTION HEATING

Get access (open in a dialog) DOI: 10.1615/IHTC16.hte.023376
pages 5331-5338

Resumo

There have recently been a number of works on magnetic hyperthermia, which is a medical treatment for killing cancer cells by raising their temperatures. A promising heating method is electromagnetic induction of magnetic particles delivered or injected into cancer cells. For accomplishing this treatment, it is crucial to precisely measure and control the heat generation rate and resulting temperature of magnetic particles. This paper presents a near-infrared imaging method to measure temperature distributions of water surrounding gel droplets containing micro-magnetic particles in vitro. This method is based on the temperature dependence of the absorption coefficient of water at a wavelength of 1412 nm. Assumig that the temperature distributions were hemispherically symmetric, the radial distributions of the absorption coefficient were constructed by applying the inverse Abel transform to the absorbance profiles. The absorption coefficient distributions were finally converted to the temperature distributions. The results clearly demonstrated that the temperature around each gel droplet increased, depending on the induction heating power, i.e., magnetic field intensity.