Patent · US Active

Detection device for detecting photons and method therefore

US9759822B2 · kind B2 · utility

20Cited by

2References

15Claims

0Family size

Assignee

KONINIKLIJKE PHILIPS N.V. · NL

Inventors

Heiner Daerr · Hamburg, DE
Christoph Herrmann · Aachen, DE
Frank Bergner · Hamburg, DE
Roger Steadman Booker · Aachen, DE

Key dates

Filing date	Nov 20, 2014
Grant date	Sep 12, 2017
Priority date	—
Expiry date	Nov 20, 2034

Classification

Technology area (CPC G)Physics
CPC primaryG01T1/249
WIPO fieldEnvironmental technology
WIPO sectorChemistry

Abstract

The present invention relates to a detection device (6) for detecting photons emitted by a radiation source (2). The detection device (6) is configured to detect the photons during a first time period. The detection device (6) comprises a sensor (10) having an intermediate direct conversion material for converting photons into electrons and holes, a shaping element (20), and a compensation unit (450, INT, 950). The compensation unit (450, INT, 950) is adapted to provide a compensation signal based on the electrical pulse and on a photoconductive gain of said sensor (10). The core of the invention is to provide circuits to reduce artifacts due to inherent errors with direct conversion detectors in spectral computed tomography by determining a compensation current, by detecting or monitoring a baseline restorer feedback signal, or by ignoring signals above the baseline level.

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