Automatice exposure control for x-ray imaging
US10285661B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 18, 2015 |
| Grant date | May 14, 2019 |
| Priority date | — |
| Expiry date | Dec 16, 2037 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B6/545
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
In an x-ray imaging method, the acquisition of a signal image is split off into acquisition of two or more subimages or frames. The first subimage may be acquired with an exposure of a low dose followed by a readout cycle. The dose of the exposure for acquiring the first subimage can be chosen such that it is below the default dose for a particular anatomy. The first subimage may be used to calculate or estimate the parameters of exposure for acquiring a second or subsequent images subimage. The estimation may be such that the total dose received by the imager, in acquiring the first and second subimages, achieves an expected target value to provide an image of good quality. The first and second subimages can be combined to form the final image. A detector array supporting automatic exposure control (AEC) includes AEC pixels providing AEC signals. The AEC pixels are independently or individually addressable and/or readable.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.