Scan geometry corrections for tomosynthesis mobile radiographic apparatus
US9649074B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 19, 2013 |
| Grant date | May 16, 2017 |
| Priority date | — |
| Expiry date | Nov 19, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T11/005
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A mobile radiography apparatus has a moveable (e.g., wheeled) transport frame and an adjustable column mounted at the frame. A boom apparatus supported by the adjustable column can support an x-ray source assembly. Certain exemplary methods and/or apparatus embodiments can provide mobile radiography carts a capability to direct x-ray radiation towards a subject from one or a plurality of different source positions, and reconstruct two-dimensional or three-dimensional tomosynthesis images where an imaging geometry of x-ray source positions to a radiographic detection array is not known for a plurality of x-ray tomosynthesis projection images. In one embodiment, an imaging geometry and tomosynthesis reconstruction(s) can be simultaneously determined by iteratively determining a current imaging geometry while iteratively monitoring a metric (e.g., stopping criterion) that approaches a prescribed or desired value associated with the tomosynthesis reconstruction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.