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Title

Comparison between audio-only and audiovisual biofeedback for regulating patients' respiration during four-dimensional radiotherapy.

Authors

Jesang Yu; Ji Hoon Choi; Sun Young Ma; Tae Sig Jeung; Sangwook Lim

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.

Subjects

PHYSIOLOGICAL control systems; RADIOTHERAPY; REGULATION of respiration; ELECTROTHERAPEUTICS; MEDICAL radiology; THERAPEUTICS

Publication

Radiation Oncology Journal, 2015, Vol 33, Issue 3, p250

ISSN

2234-1900

Publication type

Academic Journal

DOI

10.3857/roj.2015.33.3.250

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