Progress in Medical Physics (한국의학물리학회지:의학물리)

Korean Society of Medical Physics (한국의학물리학회)
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Study of the Respiratory Monitoring System by Using the MEMS Acceleration Sensor

MEMS 가속도 센서를 이용한 환자 호흡동작 모니터링 체계 연구

  • Sung, Jiwon (Department of Radiologic Science, Korea University College of Health Science) ;
  • Yoon, Myonggeun (Department of Radiologic Science, Korea University College of Health Science) ;
  • Chung, Weon Kuu (Department of Radiation Oncology, Kyung Hee University Hospital at Gandong) ;
  • Kim, Dong Wook (Department of Radiation Oncology, Kyung Hee University Hospital at Gandong) ;
  • Shin, Dong Oh (Department of Radiation Oncology,Kyung Hee University Medical Center)
  • 성지원 (고려대학교 보건과학대학 방사선과학과) ;
  • 윤명근 (고려대학교 보건과학대학 방사선과학과) ;
  • 정원규 (강동경희대학교병원 방사선종양학과) ;
  • 김동욱 (강동경희대학교병원 방사선종양학과) ;
  • 신동오 (경희대학교병원 방사선종양학과)
  • Received : 2013.02.05
  • Accepted : 2013.03.06
  • Published : 2013.03.31
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Abstract

In this study, we developed and evaluated the patient respiration training method which can help to avoid the problems for the limitation of RGRT applicable patient cases. By using the MEMS (micro-electro-mechanical-system) acceleration sensor, we measured movement of motion phantom. We had compared the response of MEMS with commercially introduced real time patient monitoring (RPM) system. We measured the response of the MEMS with 1 dimensional motion phantom movement for 2.5, 3.0, 3.5 second of period and the 2.0, 3.0, 4.0 cm of the amplitudes. The measured period error of the MEMS system was 0.6~6.0% compared with measured period using RPM system. We found that the shape of MEMS signals were similar with RPM system. From this study, we found the possibility of MEMS as patient training system.

본 연구팀은 호흡 훈련을 통해 호흡의 안정성과 재현성을 증대시킴으로써 환자 적용 범위를 넓히고자 미세전자기계시스템(micro-electro-mechanical system, MEMs) 가속도 센서를 이용한 새로운 호흡훈련시스템을 개발하고자 한다. 본 연구는 호흡동작 모니터링의 선형연구로 MEMS 센서의 성능평가를 Respiratory Gating Platform (RGP)을 이용하여 2.5, 3.0, 3.5 s/cycle의 속도와 4.0, 3.0, 2.0 cm을 진폭으로 하는 1차원 왕복운동에 대한 MEMS 가속도 센서의 순간중력가속도에 대한 반응을 측정하였고 이를 Varian RPM (real time patient monitoring system) 시스템과 비교하였다. RGP의 운동 주기에 대한 MEMS 가속도 센서의 주기 오차는 0.6~6.0%로 측정되었으며 RPM 시스템과 MEMS 가속도 센서에 대한 진폭 감도오차는 1%와 3.6~11.5%로 측정 되었다. 본 연구를 통하여 MEMS 가속도 센서에 대한 환자 호흡 훈련용으로서의 가능성을 확인할 수 있었다.

Keywords

References

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