TABLE 1
Activity Concentrations for Image Quality Measurement
Area measured
Activity concentration
4:1 (kBq/mL)
8:1 (kBq/mL)
Background
4.78
5.66
Hot spheres
19.05
46.20
Scatter phantom ratios
3.82
5.53
Assayed hot-to-background ratio
3.99
8.17