대한방사선종양학회지. 2005 ; 23/4 : 217 ~ 222
Study of Respiration Simulating Phantom using Thermocouple-based Respiration Monitoring Mask
임상욱 and 임상욱*†?안승도*?박성호*?이병용‡?이상훈†?조삼주†허현도†?신성수*?김종훈*?이상욱*?권수일†?최은경*
울산대학교 의과대학 서울아산병원 방사선종양학과*, 경기대학교 의학물리학과†

Purpose: To develop the respiration simulating phantom with thermocouple for evaluating 4D radiotherapy such as gated radiotherapy, breathing control radiotherapy and dynamic tumor tracking radiotherapy.
Materials and Methods: The respiration monitoring mask (ReMM) with thermocouple was developed to monitor the patient\\\'s irregular respiration. The signal from ReMM controls the simulating phantom as organ motion of patients in real-time. The organ and the phantom motion were compared with its respiratory curves to evaluate the simulating phantom. ReMM was used to measure patients’ respiration, and the movement of simulating phantom was measured by using RPM?. The fluoroscope was used to monitor the patient\\\'s diaphragm motion.
Results: Comparing with the curves of respiration measured by thermocouple and those of the organ motion measured by fluoroscope and RPM, the standard deviations between the curves were 9.68% and 8.53% relative to the organ motion, respectively. The standard deviation of discrepancy between the respiratory curve and the organ motion was 8.52% of motion range.
Conclusion: Patients felt comfortable with ReMM. The relationship between the signal from ReMM and the organ motion shows strong correlation. The phantom simulates the organ motion in real-time according to the respiratory signal from the ReMM. It is expected that the simulating phantom with ReMM could be used to verify the 4D radiotherapy.
KEY WORD :
서울 서대문구 연세로 50-1 연세의료원 광혜관 2층 방사선종양학교실내 (우.03722)
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