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:
Mar. 24, 1981
Filed:
Jun. 25, 1979
Eric M Woronowicz, West Allis, WI (US);
General Electric Company, Schenectady, NY (US);
Abstract
A gamma camera having a Compton scattered radiation deemphasizer. A summing device produces pulses proportional to the total energy of each scintillation caused by absorption of gamma photons in a scintillation crystal. Scintillation events are displayed at the x,y coordinates of the event on a cathode ray tube screen by unblanking the tube with z pulses applied to its control electrode. The deemphasizer determines where the peaks of total energy pulses fall in a part of the energy spectrum or window and between lower and upper limits. The deemphasizer causes small z pulses to be produced in the part of the spectrum where Compton scatter is most prevalent and causes increasingly larger z pulses as total energy increases to the midpoint of the spectrum where Compton scatter is insignificant. Constant amplitude z pulses are produced at and after the midpoint.