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

Seon Bung Hwang; Mun Kyu Park; Seung Woo Park; Yu Ra Cho; Dong Han Lee; Hai Jo Jung; Young Hoon Ji; Soo-Il Kwon

doi:10.14316/pmp.2014.25.4.264

Journal List > Prog Med Phys > v.25(4) > 1098452

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Hwang, Park, Park, Cho, Lee, Jung, Ji, and Kwon: Development and Utility Evaluation of Portable Respiration Training Device for Image-guided Stereotactic Body Radiation Therapy (SBRT)

Original Article

Progress in Medical Physics 2014;25(4):264-270.

Published online: 20 January 2014

DOI: https://doi.org/10.14316/pmp.2014.25.4.264

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

Seon Bung Hwang^∗,^†, Mun Kyu Park^∗, Seung Woo Park^∗, Yu Ra Cho^∗, Dong Han Lee^∗, Hai Jo Jung^∗, Young Hoon Ji^∗, Soo-Il Kwon^†

^∗Korea Institute of Radiological and Medical Sciences, Seoul, Korea

^†Department of Medical Physics, Kyonggi University, Suwon, Korea

Correspondence: Soo-Il Kwon (sikwon@kyonggi.ac.kr) Tel:82-31-249-9618, Fax:82-31-253-1165

Received 12 November 2014 Revised 17 December 2014 Accepted 19 December 2014

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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.

Keywords: Image guided robotic radiosurgery system, Respiratory training system, Synchrony

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Fig. 1.

Respiratory signal acquisition using the belt system.

Fig. 2.

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

Fig. 3.

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

Fig. 4.

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

Fig. 5.

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

Table 1.

The ave for each applican erage of devia nt in free and ation in perio d guided resp d and amplitude iration.

Average of deviation	Free respiration	Guided respiration	Difference (%)
Period (sec)	0.357	0.158	−55.74±0.14
Amplitude (V)	0.313	0.225	−28.12±0.10

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