Sparse and energy discriminating collimated detector elements to assist scatter evaluation in CT imaging
US9285326B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jun 19, 2012 |
| Grant date | Mar 15, 2016 |
| Priority date | — |
| Expiry date | Jun 19, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05G1/02
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A computed-tomography apparatus that includes a CT scanner including an X-ray source and a detector covering respective angle ranges in the axial and transaxial planes of the CT scanner. The CT detector includes first detector elements disposed on a first surface to capture incident X-ray photons emitted from the X-ray source, and second detector elements sparsely disposed on a second surface different from the first surface, the second surface being farther away from the scanner than the first surface, the second detector elements being smaller in number than the first detector elements. Each of the second detector elements is reachable only by X-ray photons originating in a small angle range around a line connecting the X-ray source and a center of the surface of the detector element, the small angle range being determined by the predetermined distance separating the first and second surfaces and a size of the detector element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.