Method of processing radiation spectra diffused through a material in order to obtain a primary diffuse radiation spectrum through said material, associated device and computer program
US8774360B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 31, 2011 |
| Grant date | Jul 8, 2014 |
| Priority date | — |
| Expiry date | Oct 2, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2211/408
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method and device for obtaining a first radiation spectrum diffused through a material, in which the material is exposed to an incident irradiation beam emitted by a radiation source. A first radiation spectrum diffused through the material is measured by means of a main detector, arranged so that its observation field intersects the irradiation beam inside the material. At least one secondary radiation spectrum diffused through the material is measured by means of at least one secondary detector and a measurements matrix (X) is constructed starting from previously measured spectra. The measurements matrix is decomposed in two non-negative matrices, a weights matrix (A) and a spectra matrix (S), where the spectra matrix includes an estimated multiple diffuse radiation spectrum and an estimated primary diffuse radiation spectrum. The device includes a microprocessor and computer program. A computer program product for implementing the method is also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.