Surgery – Diagnostic testing – Measuring or detecting nonradioactive constituent of body...
Patent
1997-05-08
1999-01-12
Casler, Brian
Surgery
Diagnostic testing
Measuring or detecting nonradioactive constituent of body...
600476, 250332, 25033901, 250343, 356932, H61B 500
Patent
active
RE0360449
ABSTRACT:
A spectrophotometer for providing an image of a radiation scattering medium having one or more radiation attenuating constituents is disclosed herein. The spectrophotometer includes a light source for illuminating the scattering medium with electromagnetic radiation of at least one wavelength. In one embodiment a time-gated detector serves to detect, during a predefined detection interval, the electromagnetic radiation having traversed a distribution of path lengths during propagation through a region of the medium. A photon counting apparatus or the like measures the intensity of the detected portion of the electromagnetic radiation, wherein the measured intensity is a function of attenuation of the region within the medium. A display apparatus is operative to generate the image in accordance with the measured intensity.
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patent: 5137355 (1992-08-01), Barbour et al.
patent: 5139025 (1992-08-01), Lewis et al.
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