Accurate determination of the shape and localization of metallic object(s) in X-ray CT imaging
US8498465B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 23, 2010 |
| Grant date | Jul 30, 2013 |
| Priority date | — |
| Expiry date | Nov 17, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/30052
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A binary image reconstruction method is provided to identify metal objects in a computer tomography (CT) image. The method includes providing a suitably programmed computer, providing a CT image, where the CT image includes intensity data, and the suitably programmed computer is used to determine a first range of attenuation coefficient values and a second range of attenuation coefficient values in the intensity data, where when a difference between the first range of attenuation coefficient values and the second range of attenuation coefficient values is less than a pre-determined gradient threshold value, a boundary of a metal object in the CT image is determined.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.