X-ray diagnostic apparatus for eliminating scattered X-ray components
US4656650A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 2, 1985 |
| Grant date | Apr 7, 1987 |
| Priority date | — |
| Expiry date | Apr 2, 2005 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/30
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In an X-ray diagnostic apparatus, it is very desirable to mitigate the adverse effect of the scattered X-ray components. When the X-ray shield member is positioned in the X-ray projection area during the first X-ray projection period, the first X-ray transmission image data is obtained. From this X-ray transmission image data, the scattered X-ray component data is calculated in the interpolation method of a SINC function. When the X-ray shield member is removed from the X-ray projection area during the second X-ray projection period, the second X-ray transmission image data is obtained that includes not only the primary X-ray components but also the scattered X-ray components. The desirable X-ray transmission image data is obtained by subtracting the first image data from the second image data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.