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- W2374967180 abstract "Objective The aim of this study was to investigate the partial volume effect of positive nodules on positron emission tomography(PET) and set up a correction method.Methods NEMA body-phantom was used,which held six spheroids with the volumes(V) ranged from 0.54 to 26.90 cm3.Serial tumor to background ratios(T/B) were set from 2.69 to 21.27.The scanners were Siemens Biograph 64 True V PET/CT and ECAT EXACT HR+ PET,and the scans adopted routine whole-body acquisition and processing protocols.Results The measured T/B had linear correlation with ln(V) and the T/B when the other variant was stabilized.For the PET/CT,the correction formulation was real T/B =(measured T/B-0.59)/(0.17*ln(V)+0.37)+1.62;and for the PET,the correction formulation was real T/B =(measured T/B-1.71)/(0.11*ln(V)+0.21)+1.52.Conclusion The partial volume effect of positive nodules can be corrected by a formulation,which is special for the PET system and the protocols." @default.
- W2374967180 created "2016-06-24" @default.
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- W2374967180 date "2009-01-01" @default.
- W2374967180 modified "2023-09-27" @default.
- W2374967180 title "Correction of Partial Volume Effect of Positive Nodules on PET" @default.
- W2374967180 hasPublicationYear "2009" @default.
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