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- W4220931645 abstract "This study aimed to investigate the appropriate Silicon photomultiplier -PET/CT acquisition and image reconstruction conditions for each age group.The original phantom was developed to reflect the thickness and width of the torso in each age group (neonates, 1-year-olds, 5-year-olds, 10-year-olds, 15-year-olds, and adults). The ratio of hot spheres to background radioactivity was 4:1, and the radioactivity concentration was adjusted according to the Japanese consensus guidelines for appropriate implementation of pediatric nuclear medicine examinations. We evaluated the root mean square error (RMSE) as an assessment/function of the standardized uptake value of each hot sphere, the background variability (N10 mm), the % contrast of the hot sphere (QH, 10 mm/N10 mm), and the noise equivalent counts to determine the optimal reconstruction parameters and the appropriate acquisition time.The minimum RMSE was obtained by setting the half-width of the Gaussian filter to 0-2 mm for iteration 1 or 2 and to 2-4 mm for iteration 3 or more. The acquisition times that satisfied the image quality equivalent to 120 s acquisitions in the adult phantoms were 30 s in the neonatal and 1-year-old phantoms, 60 s in the 5- and 10-year-old phantoms, and 75 s in the 15-year-old phantoms.This study demonstrated that good PET images could be obtained with short acquisition times when the examination is performed under appropriate reconstruction conditions." @default.
- W4220931645 created "2022-04-03" @default.
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- W4220931645 date "2022-01-17" @default.
- W4220931645 modified "2023-09-23" @default.
- W4220931645 title "Optimization of pediatric FDG-PET/CT examinations based on physical indicators using the SiPM-PET/CT system" @default.
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- W4220931645 doi "https://doi.org/10.1097/mnm.0000000000001527" @default.
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