Q1. What are the contributions in this paper?
Ue-frequency BCG ( natural frequency about 1 to 2 c/s ) represents the velocity of the center of gravity, provided that the damping is much more than critical.
Physical basis of ballistocardiography. III.
H.C. Burger,Abraham Noordergraaf +1 more
TLDR
Two methods for calculating the amplitude characteristic of the high-frequency BCG, the difference in movement of subject and BCG taken into account, are compared and discussed.About:
This article is published in American Heart Journal.The article was published on 1956-02-01 and is currently open access. It has received 40 citations till now. The article focuses on the topics: Ballistocardiography.read more
Citations
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Journal ArticleDOI
Validation of a one-dimensional model of the systemic arterial tree.
TL;DR: This study constitutes a first validation of the complete one-dimensional model using human pressure and flow data and supports the applicability of the 1-D model in the human circulation.
Journal ArticleDOI
Arterial viscoelasticity: a generalized model. Effect on input impedance and wave travel in the systematic tree.
TL;DR: A new mathematical model for the wall properties emerges, which accounts in quantitative terms for the frequency dependence of the Young modulus, stress-relaxation, creep, and hysteresis, and covers all the known aspects of the viscoelastic wall properties.
Journal ArticleDOI
The use of an analog computer in a circulation model.
TL;DR: Derivation and description are presented of an electrical analog of the left ventricle and the systemic arterial tree that has fewer limitations than the mathematical model.
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Influence of inlet boundary conditions on the local haemodynamics of intracranial aneurysms
TL;DR: The study shows that assumptions made on the velocity profile while specifying inlet boundary conditions have little influence on the local haemodynamics in the aneurysm, provided that a sufficient extension of the afferent vasculature is considered and that geometry is the primary determinant of the flow field within theAneurismal sac.
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The relation of the ballistocardiogram to cardiac function.
TL;DR: It is hopeful that the time has come when doctors will no longer be content to regard heart diseases from the purely anatomic viewpoint, and when a statement of the strength and coordination of the heart's contraction will be considered an essential part of the record of every cardiac case.
References
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Journal ArticleDOI
Dynamic Comparison of Current Ballistocardiographic Methods Part II. Effect of a Platform in Ballistocardiographic Dynamics
Talbot Sa,Harrison Wk +1 more
TL;DR: It was shown that in addition to the cardiovascular forces sought, other undesired forces from the support were mixed in, seriously altering the record: especially for components in the important 4 to 8 cycles per second region.
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Simultaneous calibrated recording of displacement, velocity, and acceleration in ballistocardiography.
J.E. Smith,Samuel Bryan +1 more
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A study of the physical properties of the ballistocardiograph
TL;DR: This research suggests that a ballistocardiograph adequate to represent the acceleration pattern must have a frequency response which is linear to 11 cycles per second and that adequate mechanical or electrical filtering must be present to eliminate the distortion introduced by the transmission of impulses through the body.
Journal ArticleDOI
Physical basis of ballistocardiography. II: The quantities that can be measured with different types of ballistocardiographs and their mutual relations
H.C. Burger,Abraham Noordergraaf +1 more
TL;DR: In this paper the binding between body and ballistocardiograph is assumed to be infinitely strong and the relation between the quantities of displacement, velocity, and acceleration of the center of gravity is deduced.