The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 28, 1999
Filed:
Dec. 31, 1997
Floribertus P Heukensfeldt Jansen, Brookfield, WI (US);
Other;
Abstract
An apparatus and method to be used with a gamma camera for identifying and compensating for photomultiplier tube gain drift wherein a photon source is used during a customer quality control flood procedure to direct photons toward the camera and wherein the source is known to generate approximately identical numbers of photons at energies within an acquisition range of energy levels, the acquisition range having a mid-value at energy level Z, the camera is used to generate an upper image using photons having energies above level Z and within the acquisition range and to generate a lower image using photons having energies below level Z and within the acquisition range, the upper and lower images are used to identify PMTs with incorrect gain, identify gain error and then compensate for the error.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile