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BioMed Research International
Volume 2013, Article ID 574934, 8 pages
http://dx.doi.org/10.1155/2013/574934
Research Article

Control of Respiratory Motion by Hypnosis Intervention during Radiotherapy of Lung Cancer I

1Institute of Biomedical and Health Engineering, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, 1068 Xueyuan Anenue, Shenzhen University Town, Shenzhen 518055, China
2Zhuhai Psychological Counseling Co., Ltd, 201-40A Haisong Building, 9th Tairan Road, Shenzhen 518000, China
3Lab for Wearable Devices, Key Lab for Health Informatics of Chinese Academy of Sciences, 1068 Xueyuan Anenue, Shenzhen University Town, Shenzhen 518055, China

Received 21 May 2013; Revised 8 July 2013; Accepted 31 July 2013

Academic Editor: Ching Chong Jack Yang

Copyright © 2013 Rongmao Li et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The uncertain position of lung tumor during radiotherapy compromises the treatment effect. To effectively control respiratory motion during radiotherapy of lung cancer without any side effects, a novel control scheme, hypnosis, has been introduced in lung cancer treatment. In order to verify the suggested method, six volunteers were selected with a wide range of distribution of age, weight, and chest circumference. A set of experiments have been conducted for each volunteer, under the guidance of the professional hypnotist. All the experiments were repeated in the same environmental condition. The amplitude of respiration has been recorded under the normal state and hypnosis, respectively. Experimental results show that the respiration motion of volunteers in hypnosis has smaller and more stable amplitudes than in normal state. That implies that the hypnosis intervention can be an alternative way for respiratory control, which can effectively reduce the respiratory amplitude and increase the stability of respiratory cycle. The proposed method will find useful application in image-guided radiotherapy.