Method and apparatus for determining target depth, brightness and size within a body region
US7403812B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 17, 2002 |
| Grant date | Jul 22, 2008 |
| Priority date | — |
| Expiry date | Apr 22, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/6428
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method of investigating the location and size of a light-emitting source in a subject is disclosed. In practicing the method, one first obtains a light intensity profile by measuring, from a first perspective with a photodetector device, photons which (i) originate from the light-emitting source, (ii) travel through turbid biological tissue of the subject, and (iii) are emitted from a first surface region of interest of the subject. The light-intensity profile is matched against with a parameter-based biophotonic function, to estimate function parameters such as depth and size. The parameters so determined are refined using data other than the first measured light intensity profile, to obtain an approximate depth and size of the source in the subject. Also disclosed is an apparatus for carrying out the method.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.