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:
Aug. 25, 2026
Filed:
Jun. 08, 2021
Normalization correction method and apparatus for pet system, and device and readable storage medium
Sino Canada Health Engineering Research Institute (Hefei) Ltd., Hefei, CN;
Abstract
Provided is a normalization correction method for a PET system a detector including crystals. The method includes: obtaining a coincidence event dataset including a plurality of lines of response; calculating a geometric symmetry value of each line of response; grouping the plurality of lines of response according to the geometric symmetry value, where a plurality of lines of response in a group have a same geometric symmetry value; calculating a number of coincidence events of a same group through accumulation; cyclically calculating, according to the calculated number of the coincidence events for the same group, a geometric factor value of each group, where each line of response in the same group of lines of response has a same geometric factor value; cyclically calculating crystal efficiency factor values of the crystals; and calculating normalization factor values of the lines of response respectively, according to the geometric factor value and the crystal efficiency factor values.
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