한국의학물리학회:학술대회논문집 (Proceedings of the Korean Society of Medical Physics Conference)
- 한국의학물리학회 2004년도 제29회 추계학술대회 발표논문집
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- Pages.85-87
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- 2004
고 선량율 근접 및 온열치료 병용 삽입관의 제작과 특성
Fabrication of Combined Probes for Interstitial hyperthermia and Brachyradiotherapy
- Chu, Sung-Sil (Dapartment of Radiation Oncology Yonsei Cancer Center) ;
- Kim, Sung-Kyu (Department of Radiation Oncology Yeungnam University Medical Center)
- 발행 : 2004.11.26
초록
원격조정 아프터로딩 시스템에 사용하는 폴리에틸렌 삽입관에 금박을 입혀 라디오파(RF) 안테나로도 병행사용할수 있는 열 방사선 병용삽입관 을 제작하였다. 30W의 RF 전력으로 15분간 한천 판톰에 가열하였을 때 폴리에틸렌관은 약 5oC 상승하였으나 금박으로 코팅 된 폴리에틸렌관은 약 20
We fabricated flexible thermoradiotherapy probes to alternated combination with Interstitial hyperthermia and Brachyradiotherapy thermoradiotherapy probe was coated by gold plate on polyethylene brachytherapy probe. When Agar phantom was heated 15 minute with 30 W radiofrequency power, temperature increased as 5oC for polyethylene probe and 20oC for gold coated polyethylene probe. We observed that the 1 cm square array would heat a volume with a 1.25 cm radius circular field cross section to therapeutic temperatures (90% relative SAR using Tm) and the 2 cm square array with a 1.75 cm radius rectangular field with central inhomogeneity. With 2 cm long electrode implants, we observed that the 1 cm square array would heat a 3 cm long sagittal section to therapeutic temperature (90% relative SAR using Tm). The histopathological changes associated with RF heating of normal canine brains have been correlated with thermal distributions. RF needle electrode heating was applied for 50 min to generate tissue temperatures of 43
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