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本文介绍了联合国原子辐射效应科学委员会（ＵＮＳＣＥＡＲ）第４４次会议的概况。本次会议所讨论的议题有；（１）照射源；（２）放射性核素的剂量评价；（３）辐射对环境的影响；（４）ＤＮＡ修复和诱变；（５）遗传效应；（６）辐射诱发癌症的流行病学评估；（７）辐射和其他因素的复合效应；（８）切尔诺贝利：局部剂量和效应，其中“辐射对环境的影响”和“切尔诺贝利：局部剂量和效应”为大会讨论议题，委员会认为这些议题均是需要进一步研究的最重要的课题，建议进一步深入研究，特别需要考虑新的材料。有必要继续注意收集各国辐射照射水平的数据，以得到世界范围的更具有代表性的数值及其变化范围。应审评有关放射生物学和流行病学研究的新资料，以提高对辐射效应和所包含危险的了解。
This article presents an overview of the 44th meeting of the United Nations Scientific Committee on the Effects of Atomic Radiation (UNSCEAR). The topics discussed at this conference are: (1) sources of irradiation; (2) dosimetry of radionuclides; (3) effects of radiation on the environment; (4) DNA repair and mutagenesis; (5) genetic effects; 6) Epidemiological assessment of radiation-induced cancers; (7) Compound effects of radiation and other factors; (8) Chernobyl: local dose and effect, where “effects of radiation on the environment” and “Chernobyl Lee: Local Dosage and Effect ”as the topics for discussion in the conference. The committee considered these issues as the most important issues requiring further study. It is suggested that further study should be conducted and special consideration should be given to new materials. It is necessary to continue to pay attention to the collection of data on the level of radiation exposure in various countries in order to obtain the more representative values and the scope of their changes worldwide. New information on radiobiology and epidemiological studies should be reviewed to improve understanding of the effects of radiation and the risks involved.