Modified diffusion models for steady-state broadband reflectance with a needle-like optic probe

H. Liu, M. Johns, C. A. Giller

Research output: Contribution to journalConference articlepeer-review

2 Scopus citations


Theoretical models available for optical reflectance with small source-detector separations are limited. In this study we reported two modified diffusion models for steady-state, broadband (500-590 nm) reflectance with source-detector separations of 0.125-0.25 mm and 0.25-1.0 mm. For the former case, the major modifications are D = 1/3μs' and z0 = 1/μs'; for the latter case, an additional modification is to multiply the separation by a factor of 2. Monte Carlo simulations were used to confirm the modified models at three different hemoglobin concentrations with relative errors of 12% or smaller. These models provide the possibility to extract local optical and physiological parameters of blood-perfused tissues from reflectance data measured with a needle-like probe.

Original languageEnglish (US)
Pages (from-to)76-81
Number of pages6
JournalProceedings of SPIE - The International Society for Optical Engineering
StatePublished - 2001
Externally publishedYes
EventOptical Tomography and Spectroscopy of Tissue IV - San Jose, CA, United States
Duration: Jan 21 2001Jan 23 2001

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


Dive into the research topics of 'Modified diffusion models for steady-state broadband reflectance with a needle-like optic probe'. Together they form a unique fingerprint.

Cite this