Dosimetry Associated with Weight-Based Approach to PET/CT Scan Acquired for Anatomic Correlation
| PET acquisition | Effective dose (mSv) | ||||||
|---|---|---|---|---|---|---|---|
| Patient category | Patient weight (kg) | CT acquisition (maximum mAs) | Injected activity (MBq) | Time per FOV (min) | CT | PET | Total |
| Color | |||||||
| Pink | 6–7.4 | 10 | 37 | 3 | 2.3 | 5.0 | 7.3 |
| Red | 7.5–9.4 | 10 | 45 | 3 | 2.1 | 5.1 | 7.2 |
| Purple | 9.5–11.4 | 15 | 55 | 3 | 3.0 | 5.1 | 8.1 |
| Yellow | 11.5–14.4 | 20 | 68 | 3 | 3.8 | 5.5 | 9.3 |
| White | 14.5–18.4 | 20 | 87 | 3 | 3.6 | 5.5 | 9.1 |
| Blue | 18.5–22.4 | 20 | 108 | 3 | 3.4 | 5.3 | 8.7 |
| Orange | 22.5–31.4 | 25 | 142 | 5 | 4.0 | 6.0 | 9.9 |
| Green | 31.5–40.5 | 30 | 190 | 5 | 4.6 | 6.6 | 11.1 |
| Black | 40.5–55 | 30 | 252 | 5 | 4.1 | 7.5 | 11.6 |
| Size | |||||||
| Small adult | 55–70 | 35 | 330 | 5 | 4.3 | 7.6 | 11.9 |
| Large adult | >70 | 40 | 370 | 5 | 4.3 | 7.0 | 11.3 |
Color category in table is based on patient's weight. Maximum milliampere-seconds, injected activity, and scanning time per bed position (field of view [FOV]) are determined based on weight classification. Also listed are effective doses for CT, PET, and total PET/CT scan (28).