Image reconstruction method for high-energy, dual-energy CT system
US8306180B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jul 27, 2009 |
| Grant date | Nov 6, 2012 |
| Priority date | — |
| Expiry date | Jul 27, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V5/224
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Disclosed is an image reconstruction method in a high-energy dual-energy CT system. The method comprises steps of scanning an objection with high-energy dual-energy rays to obtain high-energy dual-energy projection values, calculating projection values of base material coefficients corresponding to the dual-energy projection values on the basis of a pre-created lookup table or by analytically solving a set of equations, and obtaining an image of base material coefficient distribution based on the projection values of base material coefficients. The method provides a solution for reconstruction with high-energy dual energy CT technology and thus a more effective approach for substance identification and contraband inspection, thereby bringing a significant improvement on accuracy and efficiency in security inspection.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.