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在吸入短寿命氡子体的情况下,支气管上皮的剂量大大高于肺区剂量或全肺平均剂量。本文报道了吸入短寿命氡子体家兔肺组织的剂量分布,结果表明,每单位α潜能暴露量在气管、主支气管、叶支气管、肺叶边缘、肺其余部分及全肺中产生的平均吸收剂量分别为0.07±0.04、0.10±0.08、0.31±0.22、0.46±0.15、0.79±0.26及0.69±0.21Gy/(Jhm~(-3))(0.02±0.01、0.04±0.03、0.11±0.08、0.16±0.05、0.28±0.09及0.24±0.07rad/WLM),而气管、主支气管及叶支气管基底细胞层的吸收剂量则分别为0.92±0.48、1.33±0.95及5.52±2.84Gy/(Jhm~(-3))(0.32±0.17、0.47±0.33及1.94±1.00rad/WLM)。
In the case of inhaled short-lived radon progeny, the dose of bronchial epithelium is much higher than the lung dose or the average whole lung dose. This paper reports the dose distribution in lungs of short-lived radon-bearing rabbits inhaled. The results show that the average absorbed dose per unit of potential exposure to the trachea, main bronchus, leaflet bronchus, lobar margins, remaining lungs, and whole lung 0.07 ± 0.04, 0.10 ± 0.08, 0.31 ± 0.22, 0.46 ± 0.15, 0.79 ± 0.26, and 0.69 ± 0.21 Gy / (Jhm -3) (0.02 ± 0.01,0.04 ± 0.03,0.11 ± 0.08,0.16 ± 0.05, 0.28 ± 0.09 and 0.24 ± 0.07rad / WLM respectively), while the absorbed doses of tracheal, main bronchial and basal lamina of bronchi were 0.92 ± 0.48, 1.33 ± 0.95 and 5.52 ± 2.84Gy / (Jhm ~ (-3 )) (0.32 ± 0.17, 0.47 ± 0.33 and 1.94 ± 1.00 rad / WLM).