Table 1.
Dose Reduction to the Patient with Single- and Double-layer Shielding
| Shielding | None | Single 180º | Single 360º | Double 360º | Reduction (%): None vs Double 360º |
|---|---|---|---|---|---|
| Adult chest procedure | |||||
| Eye (μGy) | 61.24 | 49.82 | 15.55 | 8.21 | 86.6 |
| Thyroid (μGy) | 183.2 | 183.9 | 154 | 148.7 | 18.8 |
| Breast (mGy) | 4.507 | 4.500 | 4.500 | 4.473 | 0.8 |
| Umbilicus (μGy) | 39.89 | 43.16 | 17.79 | 17.59 | 56 |
| Ovary (μGy) | 8.606 | 4.543 | 2.502 | 1.748 | 79.7 |
| Testicle (μGy) | 3.9 | 2.997 | 0.810 | 0.429 | 89 |
| Adult abdomen procedure | |||||
| Eye (μGy) | 5.353 | 4.683 | 0.916 | 0.41 | 92.3 |
| Thyroid | 7.139 μGy | 4.674 μGy | 2.805 mGy | 2.112 μGy | 70.4 |
| Breast (μGy) | 64.66 | 47.59 | 20.4 | 15.86 | 75.5 |
| Umbilicus (mGy) | 4.561 | 4.744 | 4.237 | 4.331 | 5 |
| Ovary (μGy) | 244.7 | 198.4 | 120.5 | 161.9 | 33.8 |
| Testicle (μGy) | 31.78 | 27.81 | 22.99 | 21.93 | 31 |
| Child chest procedure | |||||
| Eye (μGy) | 63.64 | 96.06 | 30.01 | 14.12 | 77.8 |
| Thyroid (μGy) | 585.5 | 389.4 | 454.1 | 259.9 | 55.6 |
| Breast (mGy) | 5.005 | 6.204 | 4.748 | 3.265 | 34.8 |
| Umbilicus (μGy) | 239 | 226.4 | 146.7 | 161.8 | 32.3 |
| Ovary (μGy) | 82.9 | 36.13 | 29.23 | 36.7 | 55.7 |
| Testicle (μGy) | 17.04 | 9.437 | 7.117 | 4.923 | 71.1 |
| Child abdomen procedure | |||||
| Eye (μGy) | 13.85 | 13.1 | 4.252 | 2.109 | 84.8 |
| Thyroid (μGy) | 53.17 | 38.01 | 29.57 | 18.38 | 65.4 |
| Breast (μGy) | 226.8 | 156.6 | 137.8 | 134.2 | 40.8 |
| Umbilicus (mGy) | 6.634 | 6.712 | 6.517 | 5.879 | 11.4 |
| Ovary (μGy) | 873.5 | 564.6 | 794.9 | 574.9 | 34.2 |
| Testicle (μGy) | 123.04 | 97.31 | 110.9 | 87.61 | 28.8 |