Organ doses and effective doses as measured by lithium fluoride thermoluminescent dosimeters in several positions for different scan protocols
| Standard CT | CT Angiography | CT Perfusion | ||||
|---|---|---|---|---|---|---|
| Intracranial | Cervical | Protocol I | Protocol II | Protocol III | ||
| Organ doses (mGy) | ||||||
| Cerebrum (overall) | 22.2 | 11.7 | 9.8 | 117.9 | 82.5 | 325.2 |
| Cerebrum (highest dose) | 35.2 | 9.2 | 10.3 | 164.9 | 114.1 | 444.2 |
| Skin (total) | 11.7 | 3.1 | 0.7 | 26.9 | 20.2 | 126.9 |
| Skin (highest dose) | 36.2 | 16.1 | 19.2 | 112.3 | 87.2 | 404.8 |
| Bone marrow (total) | 2.2 | 2.7 | 4.3 | 4.2 | 4.2 | 20.7 |
| Bone marrow (skull) | 15.8 | 9.9 | 10 | 21.4 | 21.9 | 118.1 |
| Eye lens | 5.4 | 15.2 | 13 | 13.7 | 7.9 | 35.7 |
| Thyroid | 1.1 | 19.7 | 19.2 | 2.4 | 2.4 | 9.2 |
| Esophagus | 0.7 | 4.8 | 7.5 | 2.0 | 1.2 | 4.7 |
| Lung | 0.4 | 0.6 | 4.0 | 0.7 | 0.4 | 1.0 |
| Gonads | 0.2 | 0.3 | 0.2 | 0.2 | 0.2 | 0.2 |
| Effective dose (mSv)* | 1.7 | 1.9 | 2.8 | 1.2/1.3 | 1.1/1.2 | 5.0 |
* Data for effective doses are given for male and female subjects if different (male/female).