Radiation imaging system, signal processing apparatus, and signal processing method for radiographic image
US10359520B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 15, 2018 |
| Grant date | Jul 23, 2019 |
| Priority date | — |
| Expiry date | May 15, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2223/423
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An energy resolution decrease in a radiation imaging apparatus is suppressed. The apparatus includes a detector including a conversion unit configured to convert incident radiation photons into optical photons or charges, a pixel array including pixels arranged in a two-dimensional matrix and configured to obtain a pixel value in accordance with the optical photons or charges, and an output circuit including a plurality of output channels configured to output the pixel value from the pixel array, and a signal processing unit configured to perform signal processing of correcting the pixel value by using a correction coefficient in accordance with a pixel value obtaining process model in which a process of obtaining the pixel value output from the pixel array via the plurality of output channels on the basis of the optical photons or charges is modeled and obtaining an energy-discriminated radiographic image based on the corrected pixel value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.