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. 03, 2007
Filed:
Apr. 04, 2005
Qingguo Xie, Wuhan, CN;
Chien-min Kao, Chicago, IL (US);
Zekai Hsiau, Taipei, TW;
Chin-tu Chen, Chicago, IL (US);
Qingguo Xie, Wuhan, CN;
Chien-Min Kao, Chicago, IL (US);
Zekai Hsiau, Taipei, TW;
Chin-Tu Chen, Chicago, IL (US);
National Health Research Institutes, Miaoli County, TW;
Abstract
A device and method used in high resolution positron emission tomography (PET) systems for digitizing gamma ray energy and characterizing peak time and decay time constant, models a voltage pulse generated upon a PET event detection as a fast linearly rising edge followed by a slower exponential decay. The model includes parameters of the voltage pulse that are relevant for PET event detection including a decay constant, a peak voltage value, and a peak time, which are determined from time interval measurements of the voltage pulse. The time interval measurements are made using comparators and counters in an exemplary electronic implementation.