Table 2.
Radiation dose
Organ | Full range CT (median [range], mSv) | Virtual reduced range CT (median [range], mSv) | Reduction (%) |
---|---|---|---|
Whole body | 7.4 [3.3–18.8] | 4.5 [1.9–11.2] | 39.2 |
Adrenals | 9.5 [4.9–21.6] | 1.7 [0.6–12.8] | 82.1 |
Colon | 10.3 [5.1–23.5] | 9.6 [4.9–22.1] | 6.8 |
Esophagus | 4.0 [1.5–9.7] | 0.6 [0.2–4.7] | 85.0 |
Gall bladder | 10.8 [5.5–23.6] | 8.7 [4.4–18.4] | 19.4 |
Heart | 6.7 [1.8–17.1] | 0.4 [0.1–6.4] | 94.0 |
Kidneys | 12.6 [6.7–28.2] | 10.2 [5.2–20.5] | 19.0 |
Liver | 11.3 [5.5–25.5] | 5.1 [2.2–15.1] | 54.9 |
Lungs | 5.1 [1.4–13.5] | 0.4 [0.1–5.1] | 92.2 |
Muscle | 6.5 [2.9–16.6] | 4.5 [2.2–11.2] | 30.8 |
Pancreas | 9.1 [4.5–20.6] | 3.2 [1.3–12.4] | 64.8 |
Red marrow | 5.4 [2.4–13.5] | 3.8 [1.7–8.8] | 29.6 |
Skeleton | 9.1 [3.7–23.5] | 5.0 [2.2–12.3] | 45.1 |
Skin | 6.6 [2.6–19.3] | 4.4 [1.8–12.4] | 33.3 |
Small intestine | 10.1 [5.1–22.8] | 9.8 [5.0–21.8] | 3.0 |
Spleen | 11.1 [5.4–25.4] | 4.8 [1.9–15.1] | 56.8 |
Stomach | 11.6 [5.9–26.4] | 7.0 [3.2–15.8] | 39.7 |
Urinary bladder | 11.7 [6.3–26.9] | 11.0 [6.0–25.7] | 6.0 |
Breasts | 3.8 [0.5–18.8] | 0.1 [0.1–0.6] | 97.4 |
Ovaries | 9.7 [5.8–19.4] | 9.4 [5.7–18.8] | 3.1 |
Uterus | 9.7 [6.0–20.8] | 9.5 [5.8–20.2] | 2.1 |
Testicles | 17.6 [5.4–52.9] | 3.4 [0.7–32.7] | 80.7 |
p ≤ 0.001; mSv Millisievert