Image based resolution modeling for the HRRT OSEM reconstructions software

@article{Comtat2008ImageBR,
  title={Image based resolution modeling for the HRRT OSEM reconstructions software},
  author={Claude Comtat and Florent Sureau and Merence Sibomana and I. K. Hong and N. T. Sjoholm and R{\'e}gine Tr{\'e}bossen},
  journal={2008 IEEE Nuclear Science Symposium Conference Record},
  year={2008},
  pages={4120-4123}
}
The implementation and the measurement of an approximate image based model of the ECAT HRRT PET scanner response function, designed for its regular OSEM reconstruction software, are presented. The system matrix used in the iterative reconstruction is factorized into two terms: first a matrix modeling the blurring effects in the image space, followed by the projection matrix. The methodology used to measure the elements of the image based blurring matrix is presented and applied to three HRRT… CONTINUE READING