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:
Dec. 09, 2025
Filed:
Nov. 03, 2023
Zhejiang University, Hangzhou, CN;
Huafeng Liu, Hangzhou, CN;
Amanjule Muhashi, Hangzhou, CN;
ZHEJIANG UNIVERSITY, Hangzhou, CN;
Abstract
The method for improving the coincidence time resolution of PET system based on STFT, the method obtains waveform data by setting a point source at a specific location, and then obtains a short term frequency domain amplitude information through short time Fourier transform (STFT), after that, carrying out a train set, a validation set, and a test set partitioning, and a residual neural network model composed of residual modules and a fully connected layer is used for training, achieving estimation of the TOF time of the PET system. The present invention utilizes Monte Carlo simulation experiments to perform STFT transform on waveform data to obtain the short term frequency domain amplitude information, then, a residual neural network model is trained by using the divided train set, and the trained model is tested on the validation set to obtain the trained model, finally, the accuracy of TOF time estimation based on STFT model and the improvement effect on the coincidence time resolution of PET system compared to traditional CFD methods are verified through the test set.