Prog Med Phys.  2014 Dec;25(4):264-270. 10.14316/pmp.2014.25.4.264.

Development and Utility Evaluation of Portable Respiration Training Device for Image-guided Stereotactic Body Radiation Therapy (SBRT)

• Hwang SB
• Park MK
• Park SW
• Cho YR
• Lee DH
• Jung HJ
• Ji YH
• Kwon SI

• KMID: 2315766
• DOI: http://doi.org/10.14316/pmp.2014.25.4.264

Abstract

This study developed a portable respiratory training device to improve breathing stability, which is an important element in using the CyberKnife Synchrony respiratory tracking device, one of the typical Stereotactic Radiation Therapy (SRT) devices. It produced an interface for users to be able to select one of two displays, a graph type and a bar type, supported an auditory system that helps them expect next respiration by improving a sense of rhythm of their respiratory period, and provided comfortable respiratory inducement. By targeting 5 applicants and applying individual respiratory period detected through a self-developed program, it acquired signal data of 'guide respiration' that induces breathing through signal data gained from 'free respiration' and an auditory system, and evaluated the usability by comparing deviation average values of respiratory period and respiratory amplitude. It could be identified that respiratory period decreased 55.74+/-0.14% compared to free respiration, and respiratory amplitude decreased 28.12+/-0.10% compared to free respiration, which confirmed the consistency and stability of respiratory. SBRT, developed based on these results, using the portable respiratory training device, for liver cancer or lung cancer, is evaluated to be able to help reduce delayed treatment time due to respiratory instability and improve treatment accuracy, and if it could be applied to developing respiratory training applications targeting an android-based portable device in the future, even use convenience and economic efficiency are expected.

Keyword

Image guided robotic radiosurgery system; Respiratory training system; Synchrony

MeSH Terms

Liver Neoplasms
Lung Neoplasms
Respiration*

Figure

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  Fig. 1. Respiratory signal acquisition using the belt system.

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  Fig. 2. A portable respiratory training device using window-based 8 inch Touch Smart Pad. (a) graph type (b) bar type.

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  Fig. 3. A diagram of the respiratory signal detection and analysis program using LabVIEW 2012.

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  Fig. 4. Respiratory period deviation average values of free respiration and guide respiration.

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  Fig. 5. Respiratory amplitude deviation average values of free respiration and guide respiration.

Reference

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