Sweeney, Kevin and McLoone, Sean and Ward, Tomas
A simple bio-signals quality measure for in-home monitoring.
In: Biomedical Engineering (Vol. 1 and Vol. 2), February 17 – 19, 2010 , Innsbruck, Austria .
Electrocardiography (ECG) is a test that measures the electrical
activity of the heart. The use of ECG for recording in
ambulatory settings is becoming more prominent due to an
increase in in-home monitoring. By virtue of the ambulatory
nature of the recordings, artifacts have a large effect on
the signals, with the most significant artifact a result of motion.
This paper describes an accelerometer system used to
detect differential movement between the recording electrodes
on the body. This system is then used to determine
a Quality of Signal (QOS) metric for the ECG signal. The
results show that the use of differential movement of the
recording electrodes with respect to one another is a better
representative of the motion artifact, then overall body
This simple Signal Quality metric is used to more accurately
flag the appropriate noisy ECG data which can be
rejected from the signal. The simplicity of this system also
allows it to be easily embedded into any in-home monitoring
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