Diffuse reflectance from a finite blood medium: applications to the modeling of fiber optic catheters
- 1 September 1976
- journal article
- Published by Optica Publishing Group in Applied Optics
- Vol. 15 (9), 2059-2067
- https://doi.org/10.1364/ao.15.002059
Abstract
The scattering and absorption of light by randomly oriented, discretely scattering, red blood cells imbedded in a homogeneous plasma medium can be described by the P1 approximation to the one-speed transport equation, where the cells have the dual role of anisotropic sources for first scattering events and of scattering and absorption sites for subsequent scattering events. Equations for diffuse reflectance defined for a finite size receiver in the plane of a normally incident cylindrical photon beam are derived and compared with experimental data to fundamentally justify the basic sending–receiving charactreristics of a fiber optic catheter model. A model of the fiber optic catheter used for the spectrophotometric measurement of oxygen content in blood is developed from the theory and compared with experimental results to further substantiate the theoretical approach.Keywords
This publication has 14 references indexed in Scilit:
- Clinical studies with a solid state fiberoptic oximeterThe American Journal of Cardiology, 1972
- The principle design and features of a new Hb-OximeterMedical & Biological Engineering & Computing, 1972
- Theoretical determination of the blood's relative oxygen saturationin vivoMedical & Biological Engineering & Computing, 1971
- Absorption and Multiple Scattering by Biological Suspensions*Journal of the Optical Society of America, 1970
- Reflection and Transmission of Light by Thin Films of Nonhaemolysed BloodPhysics in Medicine & Biology, 1967
- In Vivo Oximeter with Fast Dynamic ResponseReview of Scientific Instruments, 1962
- On Scattering of Waves by Random Distributions. II. Two-Space Scatterer FormalismJournal of Mathematical Physics, 1962
- New Contributions to the Optics of Intensely Light-Scattering Materials Part IJournal of the Optical Society of America, 1948
- Radiation Through a Foggy AtmosphereThe Astrophysical Journal, 1905