Method for beam hardening correction in quantitative computed X-ray tomography
US6324240A · kind A · utility
13Cited by
1References
8Claims
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Key dates
| Filing date | Nov 12, 1999 |
| Grant date | Nov 27, 2001 |
| Priority date | — |
| Expiry date | Nov 12, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S378/901
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Each voxel is assumed to contain exactly two distinct materials, with the volume fraction of each material being iteratively calculated. According to the method, the spectrum of the X-ray beam must be known, and the attenuation spectra of the materials in the object must be known, and be monotonically decreasing with increasing X-ray photon energy. Then, a volume fraction is estimated for the voxel, and the spectrum is iteratively calculated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.