의학물리학

본문글자크기
  • 2024년 10월호
    [Med Phys .] Use of a pressure sensor array for multifunctional patient monitoring in radiotherapy: A feasibility study방사선 치료에서 다기능 환자 모니터링을 위한 압력 센서 어레이 유용성 연구

    부산의대 / 전호상, 기용간*

  • 출처
    Med Phys .
  • 등재일
    2024 Aug
  • 저널이슈번호
    51(8):5582-5592. doi: 10.1002/mp.17250. Epub 2024 Jun 9.
  • 내용

    바로가기  >

    Abstract
    Background: Modern radiotherapeutic techniques, such as intensity-modulated radiation therapy or stereotactic body radiotherapy, require high-dose delivery precision. However, the precise localization of tumors during patient respiration remains a challenge. Therefore, it is essential to investigate effective methods for monitoring respiration to minimize potential complications. Despite several systems currently in clinical use, there are drawbacks, including the complexity of the setup, the discomfort to the patient, and the high cost.

    Purpose: This study investigated the feasibility of using a novel pressure sensor array (PSA) as a tool to monitor respiration during radiotherapy treatments. The PSA was positioned between the treatment couch and the back of the patient lying on it and was intended to overcome some limitations of current methods. The main objectives included assessing the PSA's capability in monitoring respiratory behavior and to investigate prospective applications that extend beyond respiratory monitoring.

    Methods: A PSA with 31 pressure-sensing elements was used in 12 volunteers. The participants were instructed to breathe naturally while lying on a couch without any audio or visual guidance. The performance of the PSA was compared to that of a camera-based respiratory monitoring system (RPM, Varian, USA), which served as a reference. Several metrics, including pressure distribution, weight sensitivity, and correlations between PSA and RPM signals, were analyzed. The PSA's capacity to provide information on potential applications related to patient stability was also investigated.

    Results: The linear relationship between the weight applied to the PSA and its output was demonstrated in this study, confirming its sensitivity to pressure changes. A comparison of PSA and RPM curves revealed a high correlation coefficient of 0.9391 on average, indicating consistent respiratory cycles. The PSA also effectively measured the weight distribution at the volunteer's back in real-time, which allows for monitoring the patient's movements during the radiotherapy.

    Conclusion: PSA is a promising candidate for effective respiratory monitoring during radiotherapy treatments. Its performance is comparable to the established RPM system, and its additional capabilities suggest its multifaceted utility. This paper shows the potential use of PSA for patient monitoring in radiotherapy and suggests possibilities for further research, including performance comparisons with other existing systems and real-patient applications with respiratory training.

     

     

    Affiliations

    Hosang Jeon 1, Dong Woon Kim 1, Ji Hyeon Joo 1 2, Dahl Park 3, Wontaek Kim 2 3, Jiho Nam 3, Dong Hyeon Kim 2 3, Yongkan Ki 1 2
    1Department of Radiation Oncology and Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Yangsan, South Korea.
    2Department of Radiation Oncology, Pusan National University School of Medicine, Yangsan, South Korea.
    3Department of Radiation Oncology, Pusan National University Hospital, Busan, South Korea.

  • 키워드
    gated radiotherapy; patient setup; pressure sensor array; respiratory monitoring; weight distribution.
  • 편집위원

    방사선치료중 환자의 움직임을 모니터링은 방사선치료의 정확도를 높이고 호흡연동치료를 하는 데 중요한데, 모니터링하는 방법으로 여러 가지가 사용되고 있다. 환자 테이블과 환자 사이에 압력센서를 이용하는 방법으로 그 사용 가능성을 알아본 논문으로 흥미로웠음

    덧글달기2024-10-04 15:47:59

  • 덧글달기
    덧글달기
       IP : 18.97.14.84

    등록