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:
Apr. 05, 1994
Filed:
Jun. 26, 1992
Applicant:
Inventors:
Brian D Johnston, Hartland, WI (US);
David L McDaniel, Dousman, WI (US);
James G Colsher, Waukesha, WI (US);
Assignee:
General Electric Company, Milwaukee, WI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01T / ; G01T / ;
U.S. Cl.
CPC ...
25036303 ; 250366 ; 250368 ;
Abstract
A PET scanner includes a ring of detector units which receive gamma rays produced by annihilation events. Each detector unit includes a 6.times.6 array of BGO scintillation crystals mounted in front of a 2.times.2 array of photomultiplier tubes. The position of a scintillation event within the crystal array is determined more accurately by selectively painting the side surfaces of the array crystals.