Comparison of the optical properties of human liver tissue and liver metastases and investigation of the dynamic temperature behavior of optical tissue properties

Joerg-Peter Ritz; Andre Roggan; Dirk Albrecht; D. Schaedel; Christoph-Thomas Germer; Heinz-Johannes Buhr

doi:10.1117/12.275083

22 May 1997 Comparison of the optical properties of human liver tissue and liver metastases and investigation of the dynamic temperature behavior of optical tissue properties

Joerg-Peter Ritz, Andre Roggan, Dirk Albrecht, D. Schaedel, Christoph-Thomas Germer, Heinz-Johannes Buhr

Author Affiliations +

Proceedings Volume 2970, Lasers in Surgery: Advanced Characterization, Therapeutics, and Systems VII; (1997) https://doi.org/10.1117/12.275083
Event: BiOS '97, Part of Photonics West, 1997, San Jose, CA, United States

Abstract

The knowledge of the optical properties of human tissue is indispensable for the understanding and optimal use of laser applications in medicine, especially for dosimetrical questions in laser-induced thermotherapy of liver metastases. In addition photothermal therapies have to consider the dynamic behavior of optical properties. In this study we evaluated the optical tissue properties of normal human liver tissue and of colorectal liver metastases. We used the double integrating sphere technique and the inverse Mont Carlo- simulation for evaluation of the optical properties. We were able to demonstrate significant differences between native and coagulated tissue as well as between normal and metastatic tissue. In the investigation of the dynamic temperature behavior of optical properties we could demonstrate that the coagulation rate cannot be described by a linear model.

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Joerg-Peter Ritz, Andre Roggan, Dirk Albrecht, D. Schaedel, Christoph-Thomas Germer, and Heinz-Johannes Buhr "Comparison of the optical properties of human liver tissue and liver metastases and investigation of the dynamic temperature behavior of optical tissue properties", Proc. SPIE 2970, Lasers in Surgery: Advanced Characterization, Therapeutics, and Systems VII, (22 May 1997); https://doi.org/10.1117/12.275083

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