Methods of minimizing scattering and improving tissue sampling in non-invasive testing and imaging
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United States of America Patent
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May 16, 2000
Issued Date -
N/A
app pub date -
Sep 25, 1997
filing date -
Jul 15, 1992
priority date (Note) -
Expired
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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.
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