Table 1 Calculated activity concentrations in background (CB,0) and in hot spheres (CH,0), total activity (A0) at scan start, and time between scanning (Δt) at the PET/MRI and the PET/CT
From: Image quality and detectability in Siemens Biograph PET/MRI and PET/CT systems—a phantom study
Sphere to background | ||||
|---|---|---|---|---|
8:1 | 4:1 | |||
PET/MRI | PET/CT | PET/MRI | PET/CT | |
CB,0 [kBq/mL] | 3.5 | 3.1 | 3.9 | 3.4 |
CH,0 [kBq/mL] | 28.6 | 25.1 | 15.4 | 13.7 |
A0 [MBq] | 20.3 | 17.8 | 21.9 | 19.4 |
Δt [min] | 20 | 19 | ||