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Constructing a Device for Calculating the Atmospheric Correction Factor for the Calibration the Radiation-Absorbed Dose in Radiotherapy

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Abstract

The purpose of this study was to measure the air temperature and the air pressure, develop an atmospheric correction factor calculation device (ACFCD), and utilize it. Because the radiation dose varies with the temperature, pressure, and humidity, is essential calibrating doses after calculating the atmospheric correction factor. In this study, we constructed an ACFCD by using a micro controller, an air thermometer, and an air pressure sensor. We measured the temperature and the air pressure in nine different spaces and confirmed the changes in the factors. We obtained the measured data as comma-separated-values files, and we created a Microsoft Excel macro for the analysis to calculate the average temperature, pressure, and atmospheric correction factor; we determined trends by using graphs. As a result of the performance evaluation, we confirmed that the space temperature and the air pressure measurement were the same (p > 0.05). In addition, we confirmed that the micro controller unit measured the heating, which we observed to be 3.9 ◦ C. The ACFCD that we developed in this study confirmed the possibility of replacing existing air thermometers and barometers and can contribute to improving work efficiency. In addition, in light of the basic concept of the ACFCD, we consider that the device will be useful for ensuring safe, accurate use of radiation once it is made more practical through additional studies.

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Authors and Affiliations

  1. Department of Radiation Oncology, Seoul National University Bundang Hospital, Seongnam, 13620, Korea

    Joo-Wan Hong

  2. Department of Nuclear Medicine, Seoul Veterans Hospital, Seoul, 05368, Korea

    Jin-Hyeok Lee

  3. Department of Medical IT Engineering, Soonchunhyang University, Asan, 31538, Korea

    Jae-Ouk Ahn & Dong-Su Yu

  4. Department of Radiological Science, College of Health sciences, EulJi University, Seongnam, 13135, Korea

    Yeong-Cheol Heo

Authors
  1. Joo-Wan Hong
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  2. Jin-Hyeok Lee
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  3. Jae-Ouk Ahn
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  4. Dong-Su Yu
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  5. Yeong-Cheol Heo
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Correspondence to Yeong-Cheol Heo.

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Hong, JW., Lee, JH., Ahn, JO. et al. Constructing a Device for Calculating the Atmospheric Correction Factor for the Calibration the Radiation-Absorbed Dose in Radiotherapy. Journal of the Korean Physical Society 72, 353–358 (2018). https://doi.org/10.3938/jkps.72.353

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  • DOI: https://doi.org/10.3938/jkps.72.353

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