Abstract
In biological tissues it is possible to generate photon density waves with wavelength below 5 cm. When these kind of waves encounter optical inhomogeneities with diameters in the mm- and cm-range, typical scattering effects occur. These scattering effect can be compared to the well known effect of ultrasound scattering. Ultrasound gets scattered at regions with different compressibility and density, while photon density waves are scattered at regions with different absorption and scattering coefficient. In this study, analytical solutions for the time dependent photon diffusion equation are used to estimate photon density wave diffraction effects caused by spherical optical inhomogeneities. The detectability of tumors and hemorrhages in the brain, based on the diffraction pattern generated by these heterogeneities, is discussed in detail.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 75-85 |
| Number of pages | 11 |
| Journal | Proceedings of SPIE - The International Society for Optical Engineering |
| Volume | 2326 |
| DOIs | |
| State | Published - Jan 31 1995 |
| Externally published | Yes |
| Event | Photon Transport in Highly Scattering Tissue 1994 - Lille, France Duration: Sep 6 1994 → Sep 10 1994 |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Computer Science Applications
- Applied Mathematics
- Electrical and Electronic Engineering