Method for optically inspecting human body and apparatus for the same
US5148022A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 13, 1990 |
| Grant date | Sep 15, 1992 |
| Priority date | — |
| Expiry date | Feb 13, 2010 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/7242
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method for optically inspecting a human body and an apparatus for the same serve to scan a light pulse having a visible wavelength to an infrared one on a specific sliced portion of a body to be inspected, for obtaining pieces of projection data about light absorption and to reconstruct an image about distribution of light absorption from the projection data with a computer tomogram. The projection data is measured by alternately radiating a first light pulse at a first wavelength in an absorption wavelength band specific to metabolic materials to be imaged and a second light pulse at a second wavelength being closer to said first wavelength. Then, the data about the transmitted beams are produced by deriving a ratio of integrated values of the first signal to the second one residing within a specific time gate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.