Analytical properties of time-of-flight PET data.

  title={Analytical properties of time-of-flight PET data.},
  author={Sanghee Cho and Sangtae Ahn and Quanzheng Li and Richard M. Leahy},
  journal={Physics in medicine and biology},
  volume={53 11},
We investigate the analytical properties of time-of-flight (TOF) positron emission tomography (PET) sinograms, where the data are modeled as line integrals weighted by a spatially invariant TOF kernel. First, we investigate the Fourier transform properties of 2D TOF data and extend the 'bow-tie' property of the 2D Radon transform to the time-of-flight case. Second, we describe a new exact Fourier rebinning method, TOF-FOREX, based on the Fourier transform in the time-of-flight variable. We then… CONTINUE READING