Radiation Oncology Journal

The Korean Society for Radiation Oncology (대한방사선종양학회)
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Comparison between audio-only and audiovisual biofeedback for regulating patients' respiration during four-dimensional radiotherapy

  • Yu, Jesang (Department of Radiation Oncology, Kosin University Gospel Hospital, Kosin University College of Medicine) ;
  • Choi, Ji Hoon (Department of Radiation Oncology, Kosin University Gospel Hospital, Kosin University College of Medicine) ;
  • Ma, Sun Young (Department of Radiation Oncology, Kosin University Gospel Hospital, Kosin University College of Medicine) ;
  • Jeung, Tae Sig (Department of Radiation Oncology, Kosin University Gospel Hospital, Kosin University College of Medicine) ;
  • Lim, Sangwook (Department of Radiation Oncology, Kosin University Gospel Hospital, Kosin University College of Medicine)
  • Received : 2015.08.24
  • Accepted : 2015.09.11
  • Published : 2015.09.30
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Abstract

Purpose: To compare audio-only biofeedback to conventional audiovisual biofeedback for regulating patients' respiration during four-dimensional radiotherapy, limiting damage to healthy surrounding tissues caused by organ movement. Materials and Methods: Six healthy volunteers were assisted by audiovisual or audio-only biofeedback systems to regulate their respirations. Volunteers breathed through a mask developed for this study by following computer-generated guiding curves displayed on a screen, combined with instructional sounds. They then performed breathing following instructional sounds only. The guiding signals and the volunteers' respiratory signals were logged at 20 samples per second. Results: The standard deviations between the guiding and respiratory curves for the audiovisual and audio-only biofeedback systems were 21.55% and 23.19%, respectively; the average correlation coefficients were 0.9778 and 0.9756, respectively. The regularities between audiovisual and audio-only biofeedback for six volunteers' respirations were same statistically from the paired t-test. Conclusion: The difference between the audiovisual and audio-only biofeedback methods was not significant. Audio-only biofeedback has many advantages, as patients do not require a mask and can quickly adapt to this method in the clinic.

Keywords

References

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