Detailed Sensitivity Data for Measurement with LEHR Collimator
| cps/MBq | ||
| LEHR collimator, 68Ga and 99mTc | Close (10 cm) | Distant (∼60 cm) |
| With PET source (frame 4) | ||
| Full detector | 2551 | 497 |
| Within PET ROI | 36 | 2.6 |
| Within SPECT ROI | 5.2 | 2.0 |
| With SPECT source (frame 5) | ||
| Full detector | 82 | 73 |
| Within SPECT ROI | 74 | 36 |
| Within PET ROI | 0.001 | 0.006 |
cps = counts per second.
Data were calculated using Equation 4. Figure 6 shows ROI positions. If dead-time correction had been applied, numbers with PET source would have been somewhat higher for close detector and slightly higher for distant detector (Table 2).