[关于确定由吸入放射性核素形成的肺部吸收剂量的形态测量学研究]
[Morphometric research in determining the absorbed dose in the lungs formed from aspirated radionuclides].
作者信息
Ivanov A E, Uvarova E I
出版信息
Med Radiol (Mosk). 1989 Jan;34(1):60-5.
Macro- and microtopography of the distribution of aspirated colloidal 144CeF3 in autographs of rabbit lung total sections were examined with the help of a monitoring-measuring device "Videoplan" and microcomputer. Quantitative assessment of photoemulsion-blackening areas at the site of radionuclide concentration has confirmed that aspirated radionuclides are distributed in the lungs according to the same laws as nonradioactive aerosols: the relation of total microvolumes of actually irradiated pulmonary tissue to the entire lung volume long after radionuclide entry is shown; a possibility to use these data for determination of an actually absorbed dose in microvolumes of pulmonary tissue during aspiration of radionuclides is considered.
借助“Videoplan”监测测量装置和微型计算机，对兔肺全切片标本中吸入的胶体144CeF3分布的宏观和微观形貌进行了检查。对放射性核素浓集部位的光乳剂变黑区域进行的定量评估证实，吸入的放射性核素在肺中的分布规律与非放射性气溶胶相同：显示了放射性核素进入后很长时间实际受照射肺组织的总体微体积与整个肺体积的关系；探讨了利用这些数据确定放射性核素吸入期间肺组织微体积中实际吸收剂量的可能性。
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