Table 2 Peak noise equivalent count rate (NECR), scatter fraction, peak true count rate and their corresponding activity concentration for the DMI-DR and DMI systems. Results obtained for DMI-DR at Southampton, Poole, and Plymouth (scanners A, B, C) [5] and for DMI at Stanford and Uppsala Universities [2], Tokyo [3] and Brugge [4] are listed for comparison
Measurement | MI-DR | MI | |||||||
|---|---|---|---|---|---|---|---|---|---|
AFOV = 15.6 cm | AFOV = 20 cm | AFOV = 15 cm | |||||||
Present work | A | B | C | Present work | Stanford | Uppsala | Tokyo | Brugge | |
Peak NECR (kcps) | 146.7 | 144 | 139 | 142 | 175.6 | 201.1 | 185.7 | 185.6 | 102.3 |
Activity at peak NECR (kBq/mL) | 31.7 | 27.3 | 30.7 | 27.7 | 20.1 | 22.1 | 21.7 | 22.5 | 23.0 |
Scatter fraction at peak NECR (%) | 36.6 | 36.8 | 37.5 | 36.9 | 40.5 | 40.4 | 40.8 | 42.1 | 41.2 |
Peak true count rate (kcps) | 589.1 | 789.2 | 875.9 | 827.0 | 463.1 | ||||
Activity at peak true count rate (kBq/mL) | 46.3 | 35.5 | 35.4 | 34.8 | 36.9 | ||||