Tissue optical property measurements: Overestimation of absorption coefficient with spectrophotometric techniques

J. H. Torres, A. J. Welch, I. Cilesiz, Massoud Motamedi

Research output: Contribution to journalArticle

29 Citations (Scopus)

Abstract

This study examines the validity of optical property measurements by comparing surface temperatures rises predicted by a well-tested mathematical model with temperatures measured experimentally during laser irradiation. Analysis is based on the early temperature response that is proportional to the absorption coefficient. The results of the investigation suggest that values for tissue absorption coefficient can be greatly overestimated when current spectrophotometric techniques are used. This seems especially true when a broad light beam and a low port-to-beam-size ratio are used for transmission and reflection measurements with an integrating sphere.

Original languageEnglish (US)
Pages (from-to)249-257
Number of pages9
JournalLasers in Surgery and Medicine
Volume14
Issue number3
StatePublished - 1994

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Temperature
Lasers
Theoretical Models
Light

Keywords

  • absorption coefficient
  • mathematical modeling
  • optical properties
  • spectrophotometer
  • temperature rise

ASJC Scopus subject areas

  • Surgery

Cite this

Tissue optical property measurements : Overestimation of absorption coefficient with spectrophotometric techniques. / Torres, J. H.; Welch, A. J.; Cilesiz, I.; Motamedi, Massoud.

In: Lasers in Surgery and Medicine, Vol. 14, No. 3, 1994, p. 249-257.

Research output: Contribution to journalArticle

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