Radiation image detecting device, radiation imaging system and operation method thereof
US9780128B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 23, 2015 |
| Grant date | Oct 3, 2017 |
| Priority date | — |
| Expiry date | Apr 13, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10F39/189
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An image detector is disposed behind a grid. The image detector has normal pixels and measurement pixels. Out of a group of measurement pixels based on which an average value of dose measurement signals is calculated, a [C/D] number of measurement pixels are disposed or chosen in a cycle Z=(R×C)±D. Wherein, C represents a cycle of a repetition pattern appearing in an arrangement direction of X-ray transparent layers and X-ray absorbing layers in an X-ray image of the grid, and is represented in units of the number of pixels. R represents a natural number of 0 or more. D represents an integer less than the cycle C. [C/D] represents a maximum integer equal to or less than C/D. Provided that at least the [C/D] number of measurement pixels are shifted C occasions by one pixel, if D=1, the average value of the dose measurement signals is invariable without any variations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.