Self-calibrated tomosynthetic, radiographic-imaging system, method, and device
US5359637A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 28, 1992 |
| Grant date | Oct 25, 1994 |
| Priority date | — |
| Expiry date | Apr 28, 2012 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B6/4291
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A self-calibrating tomosynthetic x-ray system is provided. A calibrated device for recording radiographic images of a selected object irradiated by a source of radiation includes a first radiolucent radiographic recording medium in the form of a CCD device for recording a first projected radiographic image of the selected object. A second radiographic recording medium in the form of a CCD device is supported in fixed generally parallel position relative to the first radiographic recording medium to permit radiation from the source to pass through the first radiographic recording medium and to impinge upon the second radiographic recording medium for recording a second projected radiographic image of the selected object. A radiopaque fiducial reference in the form of a grid is supported in fixed position generally between the first and second radiographic recording mediums to permit a projected image of the radiopaque fiducial reference to be recorded on the second radiographic recording medium. Projected radiographic images of the object and the fiducial reference are then recorded at different arbitrary relative positions between the source of radiation and the object, the fiducia…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.