Self-Dose S Values for Different Radionuclides Assuming Activity Is Uniformly Distributed in Small Intestinal Wall (Thickness, 3 mm) and in Contents
| Mucus thickness (μm) | S value (mGy MBq−1 s−1) | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 99mTc | 111In | 131I | 67Ga | 90Y | 211At* | ||||||||
| Wall | |||||||||||||
| 5 | Electron | 3.23·10−6 | 7.03·10−6 | 3.73·10−5 | 6.97·10−6 | 1.17·10−4 | 1.18·10−6 | ||||||
| Photon | 5.92·10−7 | 2.48·10−6 | 1.83·10−6 | 1.47·10−6 | 3.81·10−7 | ||||||||
| Total | 3.82·10−6 | 9.52·10−6 | 3.92·10−5 | 8.43·10−6 | 1.57·10−6 | ||||||||
| 50 | Electron | 3.23·10−6 | 6.98·10−6 | 3.73·10−5 | 6.98·10−6 | 1.18·10−4 | 1.19·10−6 | ||||||
| Photon | 5.85·10−7 | 2.49·10−6 | 1.84·10−6 | 1.49·10−6 | 3.85·10−7 | ||||||||
| Total | 3.82·10−6 | 9.47·10−6 | 3.91·10−5 | 8.47·10−6 | 1.57·10−6 | ||||||||
| 100 | Electron | 3.25·10−6 | 6.95·10−6 | 3.75·10−5 | 7.02·10−6 | 1.20·10−4 | 1.19·10−6 | ||||||
| Photon | 6.01·10−7 | 2.47·10−6 | 1.85·10−6 | 1.48·10−6 | 3.88·10−7 | ||||||||
| Total | 3.85·10−6 | 9.42·10−6 | 3.93·10−5 | 8.50·10−6 | 1.57·10−6 | ||||||||
| 200 | Electron | 3.22·10−6 | 6.96·10−6 | 3.80·10−5 | 7.03·10−6 | 1.22·10−4 | 1.18·10−6 | ||||||
| Photon | 6.06·10−7 | 2.47·10−6 | 1.83·10−6 | 1.46·10−6 | 3.99·10−7 | ||||||||
| Total | 3.82·10−6 | 9.44·10−6 | 3.99·10−5 | 8.50·10−6 | 1.58·10−6 | ||||||||
| Contents | |||||||||||||
| 5 | Electron | 6.70·10−11 | 2.58·10−10 | 6.42·10−7 | 2.83·10−10 | 2.95·10−5 | 1.55·10−9 | ||||||
| Photon | 4.40·10−7 | 1.79·10−6 | 1.42·10−6 | 6.13·10−7 | 1.89·10−7 | ||||||||
| Total | 4.40·10−7 | 1.79·10−6 | 2.06·10−6 | 6.14·10−7 | 1.91·10−7 | ||||||||
| 50 | Electron | 6.47·10−11 | 1.76·10−10 | 5.09·10−7 | 1.83·10−10 | 2.76·10−5 | 1.46·10−9 | ||||||
| Photon | 4.37·10−7 | 1.77·10−6 | 1.40·10−6 | 6.06·10−7 | 1.88·10−7 | ||||||||
| Total | 4.37·10−7 | 1.77·10−6 | 1.91·10−6 | 6.07·10−7 | 1.89·10−7 | ||||||||
| 100 | Electron | 6.33·10−11 | 1.58·10−10 | 4.01·10−7 | 1.25·10−10 | 2.65·10−5 | 1.36·10−9 | ||||||
| Photon | 4.36·10−7 | 1.75·10−6 | 1.38·10−6 | 5.92·10−7 | 1.83·10−7 | ||||||||
| Total | 4.36·10−7 | 1.75·10−6 | 1.79·10−6 | 5.92·10−7 | 1.84·10−7 | ||||||||
| 200 | Electron | 5.93·10−11 | 1.55·10−10 | 2.45·10−7 | 8.73·10−11 | 2.47·10−5 | 1.11·10−9 | ||||||
| Photon | 4.26·10−7 | 1.72·10−6 | 1.37·10−6 | 5.71·10−7 | 1.77·10−7 | ||||||||
| Total | 4.26·10−7 | 1.72·10−6 | 1.61·10−6 | 5.71·10−7 | 1.78·10−7 | ||||||||
↵* α-Particles excluded.