Application of infrared imaging for non-contact measurements of thermal diffusivity in tissue

Sergey A. Telenkov; Jong-In Youn; Dennis M. Goodman; Thomas E. Milner

doi:10.1117/12.386319

19 May 2000 Application of infrared imaging for non-contact measurements of thermal diffusivity in tissue

Sergey A. Telenkov, Jong-In Youn, Dennis M. Goodman, Thomas E. Milner

Proceedings Volume 3916, Biomedical Optoacoustics; (2000) https://doi.org/10.1117/12.386319
Event: BiOS 2000 The International Symposium on Biomedical Optics, 2000, San Jose, CA, United States

Abstract

We demonstrate application of an IR imaging technique for non-contact determination of thermal diffusivity of biological materials. The IR method utilizes pulsed laser excitation to produce an initial 3D temperature distribution in tissue, and records IR images of subsequent heat diffusion. The theoretical model assumes the time-dependent temperature increase following pulsed laser exposure occurs due to independent heat diffusion in longitudinal and lateral directions. A nonlinear least-squares algorithm is used to compute the lateral point spread function for a pair of recorded IR images and determine thermal diffusivity of a test specimen. Application of the method was demonstrated using tissue phantom s and ex-vivo samples of hydrated cartilage.

Citation Download Citation

Sergey A. Telenkov, Jong-In Youn, Dennis M. Goodman, and Thomas E. Milner "Application of infrared imaging for non-contact measurements of thermal diffusivity in tissue", Proc. SPIE 3916, Biomedical Optoacoustics, (19 May 2000); https://doi.org/10.1117/12.386319

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