Method and apparatus for spectral transmissibility examination and analysis
US4570638A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 14, 1983 |
| Grant date | Feb 18, 1986 |
| Priority date | — |
| Expiry date | Oct 14, 2003 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/1455
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Methodology and apparatus for the clinical evaluation of biological matter, in particular the human breast, in situ and in vivo, by spectral light transmissivity. An optical probe introduces selected light spectra into the examination subject at a first position and resulting light is detected at a second position located some distance from the infusion point; also, reception preferably occurs at another location, and the distances of these locations from the infusion point are determined. The light energy received at the distant points is quantified and conditioned by use of the determined distances from the infusion point and also by contrasting the data from the two differently-located reception points, such that the resulting data is compensated or normalized to characterize intrinsic internal tissue characteristics in an absolute sense, devoid of individual characteristics such as skin pigmentation, breast thickness, etc. The methodology further includes analytical or diagnostic treatment of the conditioned data by specific comparison of conditioned data taken from different regions of the same subject, of conditioned data taken from the same region on physiologically paired a…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.