Movable and static collimators and x-ray source arrangements for intraoral tomosynthesis
US12285279B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Mar 11, 2020 |
| Grant date | Apr 29, 2025 |
| Priority date | — |
| Expiry date | Oct 15, 2041 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2090/3966
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An intraoral tomosynthesis imaging apparatus having an intraoral detector coupled to a frame or radio-opaque marker attached to its radiation facing surface without any frame attached, wherein the frame defines a target aperture for an incident radiation beam. An enclosure seats against the target aperture and houses at least one x-ray source configured to emit a radiation beam from each of a plurality of focal points within the enclosure A collimator is disposed to form a collimated radiation beam and direct the collimated beam through the target aperture and to the detector. A geometric calibration phantom having a plurality of radio-opaque markers is disposed in the path of the collimated beam. This arrangement is modified to operate as a regular intraoral imaging device by accommodating a high-power central source at the same or different distances as other sources from the detector and displacing the phantom from the field of view.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.