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Table 3 Contrast results (in percent) for the NEMA phantom with various sphere sizes, with different reconstruction settings and the 1:4 ratio for the Biograph mMR and Biograph mCT

From: Quantitative comparison of PET performance—Siemens Biograph mCT and mMR

  mMR mCT
OSEM PSF OSEM PSF TOF PSF + TOF
Inner diameter (mm)       
 10 25.2 23.4 28.4 28.9 31.0 37.0
 13 53.8 57.1 50.8 57.5 54.4 66.0
 17 70.6 75.2 62.3 70.1 64.6 72.7
 22 80.8 83.0 70.9 74.4 73.4 77.3
Mean (hot spheres) 57.6 59.7 53.1 57.7 55.8 63.2
 28 58.7 58.8 70.8 70.9 80.3 81.0
 37 67.1 67.5 76.2 76.4 84.5 85.3
Mean (cold spheres) 62.9 63.1 73.5 73.7 82.4 83.1