Comparison between audio-only and audiovisual biofeedback for regulating patients' respiration during four-dimensional radiotherapy.
10.3857/roj.2015.33.3.250
- Author:
Jesang YU
1
;
Ji Hoon CHOI
;
Sun Young MA
;
Tae Sig JEUNG
;
Sangwook LIM
Author Information
1. Department of Radiation Oncology, Kosin University Gospel Hospital, Kosin University College of Medicine, Busan, Korea. medicalphysics@hotmail.com
- Publication Type:Original Article
- Keywords:
Audio feedback;
Respiratory regulation;
Guided breath;
Four dimensional radiotherapy
- MeSH:
Biofeedback, Psychology*;
Feedback, Sensory;
Healthy Volunteers;
Humans;
Masks;
Radiotherapy*;
Respiration*;
Volunteers
- From:Radiation Oncology Journal
2015;33(3):250-255
- CountryRepublic of Korea
- Language:English
-
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.
