Patent · US Active

Energy-resolved photon counting for CT

US7668289B2 · kind B2 · utility

13Cited by

1References

19Claims

0Family size

Assignee

KONINKLIJKE PHILIPS ELECTRONICS NV · NL

Inventors

Roland Proksa · Hamburg, DE
Michael Grass · Hanstedt, DE

Key dates

Filing date	Apr 25, 2006
Grant date	Feb 23, 2010
Priority date	—
Expiry date	Jul 25, 2026

Classification

Technology area (CPC G)Physics
CPC primaryG01N2223/419
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

Spectral CT systems require cheap detectors with high energy resolution. According to an aspect of the present invention, a computer tomography apparatus comprises a detector element which is segmented into a plurality of sub-pixels. Each sub-pixel has at least two thresholds and counting channels, wherein the second threshold for each sub-pixel varies over the nominal detector element. This may provide for an improved energy-resolved photon counting.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.