Research Papers: Imaging

Color structured light system of chest wall motion measurement for respiratory volume evaluation

[+] Author Affiliations
Huijun Chen

Peking University, College of Engineering, Department of Biomedical Engineering and Peking University, Academy of Advanced Interdisciplinary Studies Biomed-X Center, 5 Yi He Yuan Road, Haidian District, Beijing, 100871 China

Yuan Cheng

Peking University First Hospital, Department of Respiratory Medicine, 8 Xi Shi Ku Street, Xichen District, Beijing, 100034 China

Dongdong Liu, Xiaodong Zhang, Jue Zhang

Peking University, College of Engineering, Department of Biomedical Engineering and Peking University, Academy of Advanced Interdisciplinary Studies Biomed-X Center, 5 Yi He Yuan Road, Haidian District, Beijing, 100871 China

Chengli Que, Guangfa Wang

Peking University First Hospital, Department of Respiratory Medicine, 8 Xi Shi Ku Street, Xichen District, Beijing, 100034 China

Jing Fang

Peking University, College of Engineering, Department of Biomedical Engineering and Peking University, Academy of Advanced Interdisciplinary Studies Biomed-X Center, 5 Yi He Yuan Road, Haidian District, Beijing, 100871 China

J. Biomed. Opt. 15(2), 026013 (April 29, 2010). doi:10.1117/1.3368680
History: Received August 07, 2009; Revised January 29, 2010; Accepted February 01, 2010; Published April 29, 2010; Online April 29, 2010
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We present a structured light system to dynamically measure human chest wall motion for respiratory volume estimation. Based on a projection of an encoded color pattern and a few active markers attached to the trunk, respiratory volumes are obtained by evaluating the 3-D topographic changes of the chest wall in an anatomically consistent measuring region during respiration. Three measuring setups are established: a single-sided illuminating-recording setup for standing posture, an inclined single-sided setup for supine posture, and a double-sided setup for standing posture. Results are compared with the pneumotachography and show good agreement in volume estimations [correlation coefficient: R>0.99(P<0.001) for all setups]. The isovolume tests present small variations of the obtained volume during the isovolume maneuver (standard deviation<0.085L for all setups). After validation by the isovolume test, an investigation of a patient with pleural effusion using the proposed method shows pulmonary functional differences between the diseased and the contralateral sides of the thorax, and subsequent improvement of this imbalance after drainage. These results demonstrate the proposed optical method is capable of not only whole respiratory volume evaluation with high accuracy, but also regional pulmonary function assessment in different chest wall behaviors, with the advantage of whole-field measurement.

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© 2010 Society of Photo-Optical Instrumentation Engineers

Topics

Chest

Citation

Huijun Chen ; Yuan Cheng ; Dongdong Liu ; Xiaodong Zhang ; Jue Zhang, et al.
"Color structured light system of chest wall motion measurement for respiratory volume evaluation", J. Biomed. Opt. 15(2), 026013 (April 29, 2010). ; http://dx.doi.org/10.1117/1.3368680


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