RF-SCG is a new system that can capture seismocardiogram (SCG) recordings without requiring any contact with the human body. Such an unobtrusive approach would enable lay users to routinely monitor their SCG signals (e.g., on a daily basis), and may provide early warnings of cardiovascular conditions. This capability could be particularly helpful for monitoring high-risk populations – like the elderly, neonates, or patients with arrhythmia – in their everyday environments. It may also enable on-the-spot heart recordings in the event of a cardiovascular emergency. For example, if someone suspects they may be suffering from a heart attack, they could use such a system to immediately measure their SCG.
What is the seismocardiogram (SCG) ?
Seismocardiography was first studied in the late 1950s by scientists who were inspired by the technology used in seismology to register underground vibration and predict earthquakes. They adapted the technology to measure fluctuations of the cardiac movements using accelerometers. The medical community has invested significant effort in studying and understanding SCG recordings since their discovery. Clinical studies have demonstrated that the SCG is more sensitive and specific than the ECG in detecting coronary heart disease during stress exercise testing. Multiple projects have been dedicated to understanding the peaks and valleys of SCG recordings and to mapping these fiducial points to micro-cardiac events. Various studies have demonstrated that SCG recordings can be used to diagnose and monitor various cardiovascular conditions including arrhythmia, myocardial infarction, ischemia, and hemorrhage.