Method for spectral CT local tomography
US9274066B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Oct 25, 2013 |
| Grant date | Mar 1, 2016 |
| Priority date | — |
| Expiry date | May 31, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N23/046
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for performing reconstruction for a region of interest (ROI) of an object is provided. The method includes designating the ROI within the object, the ROI being located within a scan field of view (FOV) of a combined third- and fourth-generation CT scanner, the CT scanner including fixed photon-counting detectors (PCDs), and an X-ray source that rotates about the object in synchronization with a rotating detector. Further, the method includes determining, for each PCD, as a function of view angle, an on/off timing schedule, based on a size and location of the designated ROI, and performing a scan to obtain a first data set from the rotating detector and a second data set from the plurality of PCDs, while turning each PCD on and off according to the determined schedule. Finally, the method includes performing reconstruction using the first and second data sets to obtain ROI spectral images.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.