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.:

US 9176237 B1

PDF
Full Text
Expired
Date of Patent:
Nov. 03, 2015

Filed:

Mar. 18, 2013
Applicant:

National Institute of Radiological Sciences, Chiba-shi, Chiba, JP;

Inventors:

Eiji Yoshida, Chiba, JP;

Taiga Yamaya, Chiba, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01T 1/164 (2006.01); G01T 1/29 (2006.01);
U.S. Cl.
CPC ...
G01T 1/164 (2013.01); G01T 1/1647 (2013.01); G01T 1/2985 (2013.01);
Abstract

In a coincidence determination of a PET device, the PET device uses a scintillator of radioactive isotope containing background noise due to intrinsic radioactivity as a radiation detector. The PET device counts a pair of annihilation radiations that is assumed to occur from a same nuclide. The annihilation radiations are detected within a predetermined coincidence time window by a plurality of radiation detectors. The method includes determining a coincidence with a wide energy window that allows detecting the background noise due to intrinsic radioactivity as multiple coincidences; removing the multiple coincidences; and using an energy window narrower than the wide energy window to limit a coincidence event to a coincidence event in a photopeak from a positron nuclide only.


Find Patent Forward Citations

Yoshida, Eiji. (2015). Coincidence determination method and apparatus of pet device (U.S. Patent No. 9176237). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9176237

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