TY  - THES
AB  - 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.
AU  - Mojabi, Zahra S.
DA  - 2021
DO  - 10.6083/gt54kn61s
DO  - DOI
ID  - 9142
KW  - Radionuclide Imaging
KW  - Diagnostic Imaging
KW  - pet scans
KW  - ct x ray
KW  - standards
L1  - https://digitalcollections.ohsu.edu/record/9142/files/Mojabi.Zahra.2021.pdf
L2  - https://digitalcollections.ohsu.edu/record/9142/files/Mojabi.Zahra.2021.pdf
L4  - https://digitalcollections.ohsu.edu/record/9142/files/Mojabi.Zahra.2021.pdf
LK  - https://digitalcollections.ohsu.edu/record/9142/files/Mojabi.Zahra.2021.pdf
N2  - 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.
PB  - Oregon Health and Science University
PY  - 2021
T1  - Evaluation and optimization of injected activity and scan time on a 3 and 5-ring GE PET/CT while maintaining clinical image quality
TI  - Evaluation and optimization of injected activity and scan time on a 3 and 5-ring GE PET/CT while maintaining clinical image quality
UR  - https://digitalcollections.ohsu.edu/record/9142/files/Mojabi.Zahra.2021.pdf
Y1  - 2021
ER  -