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Table 6 %BG variability for the contrast phantom scanned on the PET/MR and HRRT

From: Cross-validation study between the HRRT and the PET component of the SIGNA PET/MRI system with focus on neuroimaging

    Spheres
    9.9 mm 12.4 mm 15.4 mm 19.8 mm 24.8 mm 31.3 mm
PET/MR Contrast phantom wTOF 4.7 3.0 3.0 2.7 2.5 2.9
wTOF + filter 3.6 2.5 2.6 2.4 2.4 2.6
wTOF + PSF 3.6 2.8 2.4 2.5 2.7 2.7
wTOF + PSF + filter 3.0 2.4 2.2 2.3 2.5 2.5
HRRT Contrast phantom Native 5.0 4.6 3.5 5.5 3.9 2.7
Filter 3.8 4.1 3.1 3.2 2.6 1.6
PSF 5.5 5.7 4.5 5.1 4.0 2.5
PSF + filter 4.6 5.2 4.1 3.6 2.8 1.8