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:
Jul. 24, 2007
Filed:
Nov. 03, 2003
Christopher J. Thompson, Montreal, CA;
Marie-laure Camborde, Vancouver, CA;
Christopher J. Thompson, Montreal, CA;
Marie-Laure Camborde, Vancouver, CA;
Scanwell Systems, Montreal, Quebec, CA;
Abstract
A system for providing the timing alignment for a scanner. The system includes a removable source and detector assembly which is placed near the center of the scanner when in use. The source includes a long-lived positron emitting radioactive source. The radioactive source is in close contact with a fast plastic scintillator or other mechanism of detecting the ionization due to positron decay. A method for reading out the precise time at which the surrounding medium detects the ionization due to positron decay. A mechanism for using this time as a reference clock unto which the detectors in the scanner can be aligned.