@article{ETD,
      school = {M.S.},
      author = {Mojabi, Zahra S.},
      url = {http://digitalcollections.ohsu.edu/record/9142},
      title = {Evaluation and optimization of injected activity and scan  time on a 3 and 5-ring GE PET/CT while maintaining clinical  image quality},
      publisher = {Oregon Health and Science University},
      abstract = {PET image data is regularly reconstructed with iterative  techniques, including the maximum likelihood-expectation  maximization (MLEM) and the ordered-subset expectation  maximization (OSEM) methods. GE Healthcare has introduced a  new reconstruction technique known as Q. Clear with a  penalization factor (?) in order to improve the image  quality (IQ) parameters and qualification of PET data. This  study compared the IQ impact of our facility's current  clinical OSEM (C. OSEM) and the available Q. Clear  reconstruction technique using a NEMA phantom. We  investigated the optimum ? value and its effect on IQ  parameters on our 3 and 5-ring PET/CT scanners that would  maintain the current diagnostic level of IQ while possibly  allowing for a decrease in scan time on the scanners.},
      number = {ETD},
      doi = {https://doi.org/10.6083/gt54kn61s},
      recid = {9142},
      address = {2021},
}