Apparatus and method for the correction of scatter in a radiographic system
US10820878B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 1, 2018 |
| Grant date | Nov 3, 2020 |
| Priority date | — |
| Expiry date | Mar 1, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/10116
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An x-ray imaging method comprises the steps of: providing a set of at least one training material, the set comprising different materials and/or different thicknesses of the or each material; obtaining observed x-ray images of the at least one training material with a pixellated detector; building a database in a simulator of simulated scatter kernels for variable parameters within the simulator for each of the at least one training material; generating a transfer function between parameters of the simulator and parameters of the observed image which is independent of sample type and thickness; generating a whole image scatter estimate; predicting the direct radiation for each scatter kernel; applying the transfer function to the scatter estimate and the direct radiation or the inverse of the transfer function to the observed intensity values; performing the calculation Z−S−D<threshold to provide scatter free data and/or a scatter free image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.