Table 2.
Median effective radiation dose for each type of CT study
| Anatomic Area | Type of CT Study | CT Effective dose (mSv) |
Conventional Radiographs Resulting in Equivalent Dose |
|||
|---|---|---|---|---|---|---|
| Median | Interquartile Range |
Absolute Range [Min, Max] |
Chest X-ray Series |
Mammography Series |
||
| Head and Neck | Routine Head | 2.1 | 1.8 2.8 | [0.27,5.8] | 30 | 5 |
| Routine Neck | 3.9 | 2.6 5.6 | [0.72, 8.8] | 55 | 9 | |
| Suspected Stroke | 14 | 9.4 20 | [4.1, 56] | 199 | 33 | |
| Chest | Routine Chest, no contrast | 8.2 | 5.1 11 | [1.7, 24] | 117 | 20 |
| Routine Chest, with contrast | 8.3 | 4.9 12 | [1.6, 19] | 119 | 20 | |
| Suspected Pulmonary Embolism | 9.6 | 7.0 14 | [2.3, 30] | 137 | 23 | |
| Coronary Angiogram | 22 | 14 24 | [6.5, 39] | 309 | 51 | |
| Abdomen - Pelvis | Routine Abdomen-Pelvis, no contrast | 15 | 10 20 | [2.9, 43] | 220 | 37 |
| Routine Abdomen-Pelvis, with contrast | 16 | 11 20 | [4.0, 45] | 234 | 39 | |
| Multiphase Abdomen-Pelvis | 31 | 21 43 | [6.4, 90] | 442 | 74 | |
| Suspected Aneurysm or Dissection | 24 | 20 37 | [4.1, 68] | 347 | 58 | |