Optimal weights for measuring spectral x-ray data
US8194820B2 · kind B2 · utility
5Cited by
3References
18Claims
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Key dates
| Filing date | Feb 4, 2010 |
| Grant date | Jun 5, 2012 |
| Priority date | — |
| Expiry date | Nov 8, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N23/087
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for determining a composition of an object using a spectral x-ray system is provided. X-ray photons of at least two different energies are transmitted through the object. The energy of each detected x-ray photon using a detector in the x-ray system is estimated. A first weighted sum of the number of detected photons of each energy is found using a first weighting function, wherein the first weighting function is dependent on the attenuation coefficient function of a first material. In another embodiment, the photons are binned into two energy bins wherein there is a gap between the energy bins.
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