Article archive

DATA COLLECTION PROCEDURE

15/01/2014 16:22
To evaluate and inform the design of SpiroSmart, we creat-ed a dataset of audio samples. In all, 52 volunteers partici-pated in a 45-minute study session (Table 1). All partici-pants self-identified themselves as having none or only mild lung conditions. Our custom data collection application for...

Modern Spirometry Devices

15/01/2014 16:16
Modern spirometers are generally flow based, measuring the instantaneous exhaled flow (liters/sec.). There are four prevalent types of flow-based spirometers: pneumotacho-graphs, turbines, anemometers, and ultrasounds. Pneumo-tachs measure the pressure differential across a membrane as the subject...

EXPLANATION OF SPIROMETRY

15/01/2014 16:15
through a mouthpiece. This flow can be integrated from the mouthpiece to achieve Flow vs. Time (FT), Volume vs. Time (VT), or Flow vs. Volume (FV) plots of the expira-tion. An example FV plot can be seen in Figure 2. From the plot, several quantities are measured: (1) Forced Vital Capacity (FVC) is...

Measure Lung Function on a Mobile Phone

15/01/2014 16:12
Home spirometry is gaining acceptance in the medical community because of its ability to detect pulmonary exac-erbations and improve outcomes of chronic lung ailments. However, cost and usability are significant barriers to its widespread adoption. To this end, we present SpiroSmart, a low-cost...
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