Methods, systems, and computer-program products to correct degradation in tomographic images caused by extraneous radiation
US8194821B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 26, 2008 |
| Grant date | Jun 5, 2012 |
| Priority date | — |
| Expiry date | Sep 26, 2028 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B6/4291
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Disclosed are systems, methods, and computer program products that generate estimates of errors caused by extraneous radiation in tomographic systems, such as cone-beam computerized tomography (CBCT) systems, fluoroscopic tomography systems, radiographic tomography systems, laminar tomography imaging systems, and the like. In one group of inventions, spatial errors are estimated from projection data collected where a known spatial perturbation has been introduced into radiation intensity of the source. In another group of inventions, temporal errors are estimated from a sequence of projections where a known perturbation in the radiation intensity of the source for different projections has been introduced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.