Ballistocardiography

The ballistocardiograph is a vital sign in the 1-20 Hz frequency range which is caused by the mechanical movement of the heart and can be recorded by noninvasive methods from the surface of the body. It was shown for the first time, after an extensive research work by Dr. Issac Starr, that the effect of main heart malfunctions can be identified by observing and analyzing the BCG signal. (From the Wikpedia article Ballistocardiography.)

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Recent Publications on Ballistocardiography:
Non-constrained monitoring of systolic blood pressure on a weighing scale. In this study, we developed a novel technique for estimating...	16th September, 2009	Interdisciplinary Program of Biomedical Engineering, Seoul National	Physiol Meas. 2009 Jul;30(7):679-93. Epub 2009 Jun 12. DOI Direct Link
Removal of BCG artifacts using a non-Kirchhoffian overcomplete representation. We present a nonlinear unmixing approach for extracting the...	3rd September, 2009		IEEE Trans Biomed Eng. 2009 Feb;56(2):200-4. DOI Direct Link
Maximum noise fraction (MNF) transformation to remove ballistocardiographic artifacts in EEG signals recorded during fMRI scanning. Simultaneous electroencephalography (EEG) and magnetic resonance imaging...	20th August, 2009	Department of Neurology and Center for Advanced Imaging, University of	Neuroimage. 2009 May 15;46(1):144-53. Epub 2009 Feb 6. DOI Direct Link
Non-invasive cardiac output trending during exercise recovery on a bathroom-scale-based ballistocardiograph. Cardiac ejection of blood into the aorta generates a reaction force on the...	6th June, 2009	Department of Electrical Engineering, Stanford University, Stanford, CA	Physiol Meas. 2009 Mar;30(3):261-74. Epub 2009 Feb 6. DOI Direct Link
Removal of the ballistocardiographic artifact from EEG-fMRI data: a canonical correlation approach. The simultaneous recording of electroencephalogram (EEG) and functional...	28th May, 2009	Department of Electronics and Information Systems, Ghent University,	Phys Med Biol. 2009 Mar 21;54(6):1673-89. Epub 2009 Feb 25. DOI Direct Link
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Ballistocardiography Patents:
US Patent No.	Title
7452333	Arterial pressure-based, automatic determination of a cardiovascular parameter
4889130	Method for monitoring a subject's heart and lung sounds
4889123	Method for determining heart rate
4848350	Method for recording an electrocardiogram
4836215	Method for preparing a ballistocardiogram
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