Developmental research of the high-precision measuring device of radioactivity distribution in the human body with the image Processor

图像处理器高精度人体放射性分布测量装置的研制

• 批准号: 05558070
• 负责人: KOSAKO Toshiso
• 金额: $ 5.82万
• 依托单位: The University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Developmental Scientific Research (B)
• 财政年份: 1993
• 资助国家: 日本
• 起止时间: 1993 至 1994
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-05558070/
• 关键词: internal radioactivity; whole-body counter; biokinetics; calibration phantom; CAMAC system; 人体内放射能分布; 画像処理

Because of the existence of natural background radiation, it is important for the precise whole-body counting to keep the fluctuation of background radiation slightly. It is considered that radon is one of the most important component of natural background radiation for its large fluctuation. Therefore, we investigated the relationship of weather condition and radon concentration, the effect of room air ventilation on radon concentration, and the comparison between radon concentration and count rate of whole-body counter.The internal dose estimation system was developed, which consisted of (1) the information of radionuclides and body burden obtained as the output data of the data process program developed last year and (2) the biokinetic model recommended by ICRP Pub.. 30.For the estimation of applicability for actual measuring situation, the point source, calibration phantom and human body were measured and the effects of position and distribution of radioactivity to energy spectrum were investigated.

由于天然本底辐射的存在，保持本底辐射的微小起伏对精确的全身计数至关重要。氡是天然本底辐射中最重要的组分之一，它的涨落幅度很大。为此，我们研究了天气条件与氡浓度的关系、室内通风对氡浓度的影响以及氡浓度与全身计数器计数率的比较，研制了内照射剂量估算系统，其中包括（1）作为去年开发的数据处理程序的输出数据获得的放射性核素和身体负荷的信息和（2）ICRP Pub.推荐的生物动力学模型。30.为了评价其对实际测量情况的适用性，对点源、校准体模和人体进行了测量，研究了放射性位置和分布对能谱的影响。

项目成果

N.SUGIURA: "Present・Status of whole-body counters in Lapan and New Trial of Data Aquisition System Fabrication with CAMAC system" Rroc.of Int.Sym.on Radiation Safety(ISRS-94). C17-C24 (1995)

N.SUGIURA：“Lapan 全身计数器的现状和使用 CAMAC 系统制作数据采集系统的新试验”Rroc.of Int.Sym.on 辐射安全（ISRS-94）（C17-C24）。

東郷正美: "正常日本人体内放射能の継続測定" 東京大学原子力研究総合センター共用設備管理部門年報. 21. 51-54 (1994)

Masami Togo：“普通日本人体内放射性的连续测量”东京大学原子能研究中心共同设施管理部门年度报告 21. 51-54 (1994)。

Masami TOGO: "Time-series Analysis of Monthly Observed Potassium Content in Normal Five Siblings" Annual report of comprehensive radiation science div., RCNST,The University of Tokyo. 21. 51-54 (1994)

Masami TOGO：“正常五兄弟姐妹中每月观察到的钾含量的时间序列分析”综合辐射科学部门年度报告，RCNST，东京大学。