Journal of the Korean Society of Radiology (한국방사선학회논문지)

The Korean Society of Radiology (한국방사선학회)
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Analysis of Temperature Rise of Agar Phantom according to Output of Hyperthermia Device

고주파 온열치료기 출력에 의한 한천팬텀의 온도상승 분석

  • Dong-Kyung Jung (Department of Radiologic Technology, Daegu Health College) ;
  • Mi-Hyun Han (Department of Nursing, Keimyung College University) ;
  • Hwa-Hyung Lee (Radiation Safety Center, Kyungpook National University) ;
  • Kyeong-Hwan Jeong (Department of Radiologic Technology, Daegu Health College)
  • 정동경 (대구보건대학교 방사선학과) ;
  • 한미현 (계명문화대학교 간호학과) ;
  • 이화형 (경북대학교 방사선안전관리센터) ;
  • 정경환 (대구보건대학교 방사선학과)
  • Received : 2024.10.19
  • Accepted : 2024.11.30
  • Published : 2024.11.30
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Abstract

The treatment effect varies depending on the quality of the hyperthermia device and the increase in temperature. However, there is no dedicated phantom for hyperthermia device, and studies using agar phantoms have been reported. However, it is difficult to find research on the correlation between the temperature rise of agar phantoms. In this study, an agar phantom with a size of 300 × 300 × 200 mm3 was directly produced by mixing 5 % powdered agar and 95 % sterilized distilled water. A digital 4-channel thermometer was inserted into the central axis of the agar phantom at 0, 5, 10, and 15 cm, and the output of the hyperthermia device was increased from 60 W to 150 W by 10 W for 60 minutes at 5-minute intervals to measure temperature and analyze the rate of increase. did. The maximum temperature rises in a short period of time, and the output power to reach the therapeutic effect temperature of 40.0 ℃ was found to be 150 W. In addition, the correlation analysis between output and exposure time showed a significant correlation (p<.05) and increased at all depths over 10 minutes. In this study, it is believed that the relationship between the temperature rise in the hyperthermia device will be proven to be helpful in treatment effectiveness and quality control.

온열치료기의 품질 및 온도의 상승에 의한 치료효과는 다르다. 그러나 온열치료기의 전용 팬텀이 존재하지 않으며, 한천팬텀을 이용한 연구가 보고되었다. 하지만 한천팬텀 온도상승에 미치는 상관성에 관한 연구를 찾아보기 어렵다. 본 연구는 분말한천 5 %, 멸균증류수 95 %로 혼합하여 size 300 ×300 ×200 mm3로 한천팬텀을 직접 제작하였다. 디지털 4채널 온도측정기를 한천 팬텀 중심축 0, 5, 10, 15 cm에 삽입하고, 고주파 온열치료기의 출력량을 60 W ~ 150 W로 10 W 증가에 따른 5 min 간격으로 60 min 동안 조사하여 온도 측정과 증가율을 분석하였다. 최고온도로 단시간에 상승되며, 치료효과 온도 40.0 ℃에 도달하는 출력도 150 W로 나타났다. 또한, 출력과 노출시간의 상관분석은 모든 중심 깊이에서 10 min 이상이 유의한 상관성(p<.05)을 보이며 증가하였다. 본 연구에서 온열치료기의 온도상승 관계성을 증명하여 치료효과 및 정도관리에 도움이 될 것으로 사료된다.

Keywords

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