Oscillation-Free Ballistocardiography | Zendy

Irwin Hoffman | Zendy; Milton Kissin | Zendy; Myron M. Schwarzschild | Zendy

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Oscillation-Free Ballistocardiography

Author(s) -

Irwin Hoffman,

Milton Kissin,

Myron M. Schwarzschild

Publication year - 1956

Publication title -

circulation

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 7.795

H-Index - 607

eISSN - 1524-4539

pISSN - 0009-7322

DOI - 10.1161/01.cir.13.6.905

Subject(s) - ballistocardiography , acceleration , medicine , oscillation (cell signaling) , displacement (psychology) , imaging phantom , physics , distortion (music) , mechanics , nuclear magnetic resonance , acoustics , classical mechanics , cardiology , nuclear medicine , psychology , biology , psychotherapist , genetics , amplifier , optoelectronics , cmos

Body motion resulting from cardiac forces may be recorded as displacement, velocity or acceleration by a variety of methods. None of these is identical with the cardiac force curve because of distortion due to body oscillations. Schwarzschild devised an electronic mixer that combines displacement, velocity, and acceleration in any proportion desired. This device permits recording ballistocardiograms that are free of oscillations due to body resonance. Validity of the technic was established by the identity of strain gage records of forces applied to a log phantom with simultaneous records obtained with the method presented.

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