CTDI, DLP, and Effective Dose in Various CT Protocols Performed in SPECT/CT
| CTDI (mGy) | DLP (mGy × cm) | Effective dose (mSv) | |||||
| Region | SPECT/CT protocol | Average | SD | Average | SD | Average | SD |
| Neck and thorax (20 cm) | Parathyroid study | 3.9 | 2.0 | 78.5 | 40.6 | 0.6 | 0.4 |
| Thorax (20 cm) | Attenuation correction for myocardial study | 2.4 | 1.4 | 49.6 | 28.1 | 1.0 | 0.6 |
| Thorax (30 cm) | 67Ga-citrate for infection study | 2.7 | 1.2 | 83.4 | 37.2 | 1.8 | 1.2 |