Ballistocardiography

Thompson, William B.; Rappaport, Maurice; Sprague, Howard B.

doi:10.1161/01.cir.7.3.321

Cited by 16 publications

(23 citation statements)

References 10 publications

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“…Typically, a BCG waveform consists of several waves, which are distinguished by shape, relative amplitude, and the sequence of occurrence. Each of these constituents is associated with a different cardiac event [7]. For instance, the “IJ wave” of acceleration BCG may be used to measure ejection force and stroke volume [8–12].…”

Section: Introductionmentioning

confidence: 99%

Simultaneous Monitoring of Ballistocardiogram and Photoplethysmogram Using a Camera

Shao

Tsow

Liu³

et al. 2017

IEEE Trans. Biomed. Eng.

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We present a noncontact method to measure Ballistocardiogram (BCG) and Photoplethysmogram (PPG) simultaneously using a single camera. The method tracks the motion of facial features to determine displacement BCG, and extracts the corresponding velocity and acceleration BCGs by taking first and second temporal derivatives from the displacement BCG, respectively. The measured BCG waveforms are consistent with those reported in literature and also with those recorded with an accelerometer-based reference method. The method also tracks PPG based on the reflected light from the same facial region, which makes it possible to track both BCG and PPG with the same optics. We verify the robustness and reproducibility of the noncontact method with a small pilot study with 23 subjects. The presented method is the first demonstration of simultaneous BCG and PPG monitoring without wearing any extra equipment or marker by the subject.

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Section: Introductionmentioning

confidence: 99%

Simultaneous Monitoring of Ballistocardiogram and Photoplethysmogram Using a Camera

Shao

Tsow

Liu³

et al. 2017

IEEE Trans. Biomed. Eng.

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“…A number of studies [24, 73, 79-91] used PCG together with other techniques and physiological elements to improve the physiological interpretation of the ballistocardiogram, with [91] being an important mark, as it was the first study to report the F wave.…”

Section: Clinical Viewmentioning

confidence: 99%

“…The most critical example is the difference between Gubner et al [3], a February 1953 Circulation article, and the following month’s publication of a study from Thompson’s team [91]. These studies have significant divergences, given the different devices employed.…”

Section: Clinical Viewmentioning

confidence: 99%

“…These studies have significant divergences, given the different devices employed. Both of them are valuable: as Gubner [3] deeply reflects on the major waves while Thompson [91] analyses all the ballistic waves. However, the Committee on Ballistocardiographic Terminology did not comment these divergences in the Scarborough-Talbot Report [48], published in Circulation September 1956.…”

Section: Clinical Viewmentioning

confidence: 99%

“…F Wave: This wave is a positive deflection before the G wave [92], and it is originated by atrial contractions [91]. It is seen mostly if the heart rate is slow, and occurring simultaneously with the auricular sound, between the electrocardiographic P and Q waves, and also coinciding with the atrial wave of the apex cardiogram [91].…”

Section: Clinical Viewmentioning

confidence: 99%

See 2 more Smart Citations

Theory and Developments in an Unobtrusive Cardiovascular System Representation: Ballistocardiography

Pinheiro¹,

Postolache²,

Girão³

2010

TOBEJ

138

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Due to recent technological improvements, namely in the field of piezoelectric sensors, ballistocardiography – an almost forgotten physiological measurement – is now being object of a renewed scientific interest.Transcending the initial purposes of its development, ballistocardiography has revealed itself to be a useful informative signal about the cardiovascular system status, since it is a non-intrusive technique which is able to assess the body’s vibrations due to its cardiac, and respiratory physiological signatures.Apart from representing the outcome of the electrical stimulus to the myocardium – which may be obtained by electrocardiography – the ballistocardiograph has additional advantages, as it can be embedded in objects of common use, such as a bed or a chair. Moreover, it enables measurements without the presence of medical staff, factor which avoids the stress caused by medical examinations and reduces the patient’s involuntary psychophysiological responses.Given these attributes, and the crescent number of systems developed in recent years, it is therefore pertinent to revise all the information available on the ballistocardiogram’s physiological interpretation, its typical waveform information, its features and distortions, as well as the state of the art in device implementations.

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Short and longer term repeatability of ballistocardiography in a sitting position with EMFi sensor

Alametsä

Palomäki

Viik

2011

Med Biol Eng Comput

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Short and long-term alterations of ballistocardiographic parameters (BCG) were studied in a sitting position using Electromechanical Film (EMFi) sensors. Several physiological parameters were recorded from 48 men of middle age in consecutive recordings and after a 2-week interval. The duration and amplitudes of the signal components were studied. The repeatability index R, the Pearson correlation, and Bland-Altman (BA) repeatability methods were used to determine how repeatable the studied signals are. In consecutive and during 2 week recordings, the Pearson correlation rates for BCG systolic component values (from 0.88/0.83 (T(RJ)) to 0.97/0.78 (A(IJ)), PWV values for the left 0.97/0.67 and right ankle 0.98/0.76) were detected indicating excellent repeatability during consecutive recordings. Respectively BA T(RJ) was -0.002 ± 0.028/-0.004 ± 0.030. Corresponding R values were T(RJ) 0.90/0.82 and right ankle PWV 0.98/0.81. Quite modest blood pressure R values were obtained between 2 week recordings (systolic 0.63, diastolic 0.75, and heart rate 0.59). BCG and PWV measured with EMFi sensors are highly repeatable in consecutive recordings. In longer time interval recordings, BCG is influenced by hemodynamic instability, but in spite of this the reproducibility of the main parameters of the BCG and PWV were better than measured heart rate and blood pressure values.

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Ballistocardiography

Abstract: In this study, the normal ballistocardiogram is interrelated with various cardiac events

Cited by 16 publications

References 10 publications

Simultaneous Monitoring of Ballistocardiogram and Photoplethysmogram Using a Camera

Simultaneous Monitoring of Ballistocardiogram and Photoplethysmogram Using a Camera

Theory and Developments in an Unobtrusive Cardiovascular System Representation: Ballistocardiography

Short and longer term repeatability of ballistocardiography in a sitting position with EMFi sensor

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