TY - GEN
T1 - Portable forced oscillation device for point-of-care pulmonary function testing
AU - Cao, Jian
AU - Sabharwal, Ashutosh
N1 - Publisher Copyright:
© 2016 IEEE.
PY - 2016/10/13
Y1 - 2016/10/13
N2 - The forced oscillation technique (FOT) provides a simple and accurate approach for pulmonary function testing. However, most current devices are large and high cost, hence the test remains sparingly used. To address this problem, we verified the feasibility of a smart and portable forced oscillation device based on a small subwoofer and ultrasonic sensor that is targeted at point-of-care pulmonary function testing. In this paper, we first develop and optimize the signal processing algorithm for impedance estimation. Then we characterize the signal quality of programmable oscillatory waveforms with varying frequency, amplitude and duration. Finally, we evaluate the performance of the device against both mechanical models and human subjects. The results show that the coherence function is above 0.9 for all frequencies and the measurement error is less than 10%. The device yields good repeatability and satisfies the clinical diagnostic requirements.
AB - The forced oscillation technique (FOT) provides a simple and accurate approach for pulmonary function testing. However, most current devices are large and high cost, hence the test remains sparingly used. To address this problem, we verified the feasibility of a smart and portable forced oscillation device based on a small subwoofer and ultrasonic sensor that is targeted at point-of-care pulmonary function testing. In this paper, we first develop and optimize the signal processing algorithm for impedance estimation. Then we characterize the signal quality of programmable oscillatory waveforms with varying frequency, amplitude and duration. Finally, we evaluate the performance of the device against both mechanical models and human subjects. The results show that the coherence function is above 0.9 for all frequencies and the measurement error is less than 10%. The device yields good repeatability and satisfies the clinical diagnostic requirements.
UR - http://www.scopus.com/inward/record.url?scp=85009107959&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85009107959&partnerID=8YFLogxK
U2 - 10.1109/EMBC.2016.7591185
DO - 10.1109/EMBC.2016.7591185
M3 - Conference contribution
C2 - 28268783
AN - SCOPUS:85009107959
T3 - Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS
SP - 2282
EP - 2286
BT - 2016 38th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2016
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 38th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2016
Y2 - 16 August 2016 through 20 August 2016
ER -