000009142 001__ 9142
000009142 005__ 20240124114318.0
000009142 0247_ $$2DOI$$a10.6083/gt54kn61s
000009142 037__ $$aETD
000009142 245__ $$aEvaluation and optimization of injected activity and scan time on a 3 and 5-ring GE PET/CT while maintaining clinical image quality
000009142 260__ $$bOregon Health and Science University
000009142 269__ $$a2021
000009142 336__ $$aThesis
000009142 502__ $$bM.S.
000009142 520__ $$aPET image data is regularly reconstructed with iterative techniques, including the maximum likelihood-expectation maximization (MLEM) and the ordered-subset expectation maximization (OSEM) methods. GE Healthcare has introduced a new reconstruction technique known as Q. Clear with a penalization factor (?) in order to improve the image quality (IQ) parameters and qualification of PET data. This study compared the IQ impact of our facility's current clinical OSEM (C. OSEM) and the available Q. Clear reconstruction technique using a NEMA phantom. We investigated the optimum ? value and its effect on IQ parameters on our 3 and 5-ring PET/CT scanners that would maintain the current diagnostic level of IQ while possibly allowing for a decrease in scan time on the scanners.
000009142 650__ $$aRadionuclide Imaging$$025115
000009142 650__ $$aDiagnostic Imaging$$017700
000009142 6531_ $$apet scans
000009142 6531_ $$act x ray
000009142 6531_ $$astandards
000009142 691__ $$aSchool of Medicine$$041369
000009142 7001_ $$aMojabi, Zahra S.
000009142 8564_ $$92eb41fcd-11d5-49c7-85ad-1561f0f921e4$$s2453976$$uhttps://digitalcollections.ohsu.edu/record/9142/files/Mojabi.Zahra.2021.pdf
000009142 905__ $$a/rest/prod/gt/54/kn/61/gt54kn61s
000009142 909CO $$ooai:digitalcollections.ohsu.edu:9142$$pstudent-work
000009142 980__ $$aTheses and Dissertations