Alignment method for radiography and radiography apparatus incorporating same
US5388143A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 26, 1993 |
| Grant date | Feb 7, 1995 |
| Priority date | — |
| Expiry date | Nov 26, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B42/025
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An alignment method and system for aligning an anti-scatter grid with an x-ray source of a radiographic apparatus, to facilitate accurate alignment of the central x-ray beam of the x-ray source of the radiographic apparatus with a focused grid. The present invention uses a first light projector that is substantially fixed relative to the x-ray source, which produces a first alignment image that is substantially fixed relative to the grid. Also included is a second light projector that is substantially fixed relative to the grid, and that produces a second alignment image that is substantially fixed relative to the x-ray source. The first light projector is preferably the collimator light included within the collimator housing of the x-ray apparatus, and the second light projector is preferably a laser light source, that is attachable to a grid cassette holding the grid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.