Methods of minimizing scattering and improving tissue sampling in non-invasive testing and imaging
US6420709B1 · kind B1 · utility
13Cited by
11References
10Claims
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Key dates
| Filing date | Dec 27, 2000 |
| Grant date | Jul 16, 2002 |
| Priority date | — |
| Expiry date | Dec 27, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2021/3137
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An improved method and apparatus for use in optical testing of concentration in samples has been developed. The apparatus restricts the solid angle of illumination and the solid angle of detection to eliminate a high proportion of the scattered radiation while allowing the ballistic radiation and the snake-like radiation to be transmitted. In samples which contain multiple scattering centers, this allows less correction for variations in effective pathlength and allows easier calibration of the apparatus. The use of polarized radiation as a means of minimizing scattered radiation in the sample is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.