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Article

Tabla: A Proof-of-Concept Auscultatory Percussion Device for Low-Cost Pneumonia Detection

by 1,*, 2, 2 and 1
1
Department of Bioengineering and Therapeutic Sciences, University of California, San Francisco, CA 94143, USA
2
Department of Mechanical Engineering at University of California, Berkeley, CA 94720, USA
*
Author to whom correspondence should be addressed.
This paper is an extended version of our paper published in Rao, A.; Ruiz, J.; Bao, C.; Roy, S. Tabla: An acoustic device designed for low cost pneumonia detection. In Proceedings of 2017 IEEE Healthcare Innovations and Point of Care Technologies (HI-POCT), Bethesda, MD, USA, 6–8 November 2017.
Received: 10 July 2018 / Revised: 12 August 2018 / Accepted: 13 August 2018 / Published: 16 August 2018
(This article belongs to the Section Physical Sensors)
Pneumonia causes the deaths of over a million people worldwide each year, with most occurring in countries with limited access to expensive but effective diagnostic methods, e.g., chest X-rays. Physical examination, the other major established method of diagnosis, suffers from several drawbacks, most notably low accuracy and high interobserver error. We sought to address this diagnostic gap by developing a proof-of-concept non-invasive device to identify the accumulation of fluid in the lungs (consolidation) characteristic of pneumonia. This device, named Tabla after the percussive instrument of the same name, utilizes the technique of auscultatory percussion; a percussive input sound is sent through the chest and recorded with a digital stethoscope for analysis. Tabla analyzes differences in sound transmission through the chest at audible frequencies as a marker for lung consolidation. This paper presents preliminary data from five pneumonia patients and eight healthy subjects. We demonstrate 92.3% accuracy in distinguishing between healthy subjects and patients with pneumonia after data analysis with a K-nearest neighbors algorithm. This prototype device is low cost and simple to implement and may offer a rapid and inexpensive method for pneumonia diagnosis appropriate for general use and in areas with limited medical infrastructure. View Full-Text
Keywords: acoustic; sensors; actuators; physiologic sensing; transfer function; spectrogram acoustic; sensors; actuators; physiologic sensing; transfer function; spectrogram
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MDPI and ACS Style

Rao, A.; Ruiz, J.; Bao, C.; Roy, S. Tabla: A Proof-of-Concept Auscultatory Percussion Device for Low-Cost Pneumonia Detection. Sensors 2018, 18, 2689. https://0-doi-org.brum.beds.ac.uk/10.3390/s18082689

AMA Style

Rao A, Ruiz J, Bao C, Roy S. Tabla: A Proof-of-Concept Auscultatory Percussion Device for Low-Cost Pneumonia Detection. Sensors. 2018; 18(8):2689. https://0-doi-org.brum.beds.ac.uk/10.3390/s18082689

Chicago/Turabian Style

Rao, Adam, Jorge Ruiz, Chen Bao, and Shuvo Roy. 2018. "Tabla: A Proof-of-Concept Auscultatory Percussion Device for Low-Cost Pneumonia Detection" Sensors 18, no. 8: 2689. https://0-doi-org.brum.beds.ac.uk/10.3390/s18082689

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