From: Quantitative SPECT (QSPECT) at high count rates with contemporary SPECT/CT systems
Compartment | Volume (mL) | System A | Systems B and C | ||
---|---|---|---|---|---|
Activity (GBq) | Activity concentration (MBq/mL) | Activity (GBq) | Activity concentration (MBq/mL) | ||
Large saline bag | 500 | 12.0 | 24.0 | 11.0 | 22.0 |
Small saline bag | 250 | 1.20 | 4.81 | 1.24 | 4.95 |
Large sphere | 26.5 | 0.66 | 24.7 | 0.54 | 22.0 |
Small sphere | 11.5 | 0.31 | 27.0 | 0.23 | 22.0 |
Cylinder | 355 | 0.0 | 0.0 | 0.0 | 0.0 |
Remainder of D-shaped compartment | 8557 | 4.12 | 0.48 | 3.94 | 0.46 |
Whole phantom | 9700 | 18.3 | 1.89 | 17.0 | 1.76 |