Patent · US Active

Photon-counting detector calibration

US9750471B2 · kind B2 · utility

13Cited by

2References

21Claims

0Family size

Assignee

KONINIKLIJKE PHILIPS N.V. · NL

Inventors

Carsten Oliver Schirra · Chesterfield, US
Axel Thran · Hamburg, DE
Heiner Daerr · Hamburg, DE
Ewald Roessl · Ellerau, DE

Key dates

Filing date	May 10, 2014
Grant date	Sep 5, 2017
Priority date	—
Expiry date	May 10, 2034

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61B6/4233
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

A method includes determining calibration factors for calibrating photon-counting detectors of a spectral imaging system by combining a heuristic calibration of the photon-counting detectors and an analytical calibration of the photon-counting detectors and generating a set of photon-counting calibration factors based on the combining of the a heuristic calibration and the analytical calibration. The photon-counting calibration factors, when applied to measured energy-resolved data from the photon-counting detectors of a spectral CT scan of a subject or object, mitigate spectral distortion caused by a radiation intensity profile shaper that filters a radiation beam of the spectral CT scan.

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