Method and apparatus for in vivo evaluation of tissue composition
US4768516A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 18, 1986 |
| Grant date | Sep 6, 1988 |
| Priority date | — |
| Expiry date | Feb 18, 2006 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/1455
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The specification discloses a method for determining the nature (e.g., physiological and compositional state) of internal tissue or other such biological material within a human organ or extremity, or other such individual examination subject, by use of selected light energy spectra. The selected light energy is applied to infuse the light throughout the interior of the area to be examined and the relative intensities of the infused light spectra are detected after having traversed the interior of the examination area. The detected intensities are computer-analyzed in a manner which conditions the raw magnitudes initially detected on the basis of the internal distance traversed by the infused light energy and also on the basis of broad averages of such conditioned wavelength-specific detection data representative of a number of comparable examination subjects. The resulting conditioned data is then plotted or otherwise comparatively analyzed, and the data profile so provided is shown to characterize the internal tissue structure and compositional state, showing relative amounts of particular different organic substance (e.g., fibro-glandular tissue, fat, hemoglobin, protein-bound w…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.