公开(公告)号：US20180214085A1

公开(公告)日：2018-08-02

申请号：US15747943

申请日：2016-06-24

Applicant: JIANGSU SINOGRAM MEDICAL TECHNOLOGY CO., LTD

Inventor： Dehui SUN ,  Heyu WU

IPC: A61B5/00 ,  G01T1/202 ,  G01T1/29 ,  H04L29/06

CPC classification number: A61B5/7203 ,  A61B6/037 ,  A61B6/4258 ,  G01T1/1647 ,  G01T1/202 ,  G01T1/2985 ,  G01T1/40 ,  H04L65/4076

Abstract: An online real-time correction method and system for a positron emission tomography (PET) detector. The method includes: acquiring a drifted channel number of a peak position of a full-energy peak in a drifted energy spectrum after a gain value of a PET detector system has changed and a ratio of a currently accumulated energy of each signal channel to a current total accumulated energy of all signal channels; substituting the above parameters, an initial channel number of the peak position of the full-energy peak in an initial energy spectrum and a ratio of an initially accumulated energy of each signal channel to a total initially accumulated energy of all of the signal channels in the PET detector system into a gain adjustment ratio calculation formula to calculate a gain adjustment ratio; and adjusting, according to the gain adjustment ratio, a gain value of the PET detector system.