Patent · US Active

Timing calibration for TOF-PET scanner

US7778787B2 · kind B2 · utility

6Cited by

5References

17Claims

0Family size

Assignee

KONINKLIJKE PHILIPS ELECTRONICS NV · NL

Inventors

Klaus Fiedler · Cologne, DE
Michael Geagan · Wayne, US
Gerd Muehllehner · Wayne, US
Walter Ruetten · Linnich, DE
Andreas Thon · Aachen, DE

Key dates

Filing date	Aug 2, 2005
Grant date	Aug 17, 2010
Priority date	—
Expiry date	Feb 27, 2027

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61B6/037
WIPO fieldEnvironmental technology
WIPO sectorChemistry

Abstract

A time-of-flight PET nuclear imaging device (A) includes radiation detectors (20, 22, 24), electronic circuits (26, 28, 30, 32) for processing output signals from each of detectors (20), a coincidence detector (34), a time-of-flight calculator (38) and image processing circuitry (40). A calibration system (48) includes an energy source (50, 150) which generates an electrical or optical calibration pulse. The electrical calibration pulse is applied at an input to the electronics at an output of the detector and the optical calibration pulse is applied to a preselected point adjacent a face of each optical sensor (20) of the detectors. A calibration processor (52) measures the time differences between the generation of the calibration pulse and the receipt of a trigger signal from the electronic circuitry by the coincidence detector (34) and adjusts adjustable delay circuits (44, 46) to minimize these time differences.

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