Brian David Yanoff,Mingye Wu,Lin Fu,Peter Michael Edic,Xue Rui,Geng Fu,Yannan Jin,Fredrik Gronberg
申请号：
US16221606
公开号：
US10679385B1
申请日:
2018.12.17
申请国别(地区):
US
年份:
2020
代理人:
摘要：
A method for imaging an object to be reconstructed includes acquiring projection data corresponding to the object. Furthermore, the method includes generating a measured sinogram based on the acquired projection data and formulating a forward model, where the forward model is representative of a characteristic of the imaging system. In addition, the method includes generating an estimated sinogram based on an estimated image of the object and the forward model and formulating a statistical model based on at least one of pile-up characteristics and dead time characteristics of a detector of the imaging system. Moreover, the method includes determining an update corresponding to the estimated image based on the statistical model, the measured sinogram, and the estimated sinogram and updating the estimated image based on the determined update to generate an updated image of the object. Additionally, the method includes outputting a final image of the object.
