columbus · Force Ballistocardiography

Force Ballistocardiography

Title: Force Ballistocardiography
Date: 1952
Index Abstract: Coming Soon
Photo Quality: Undetermined
Report Number: WADC TR 52-340
Creator: Von Wittern, Wolf W.
Corporate Author: Air Force Aerospace Medical Research Lab Wright-Patterson AFB OH
Extent: 41
NTRL Accession Number: AD012715
Identifier: AD0012715
AD Number: 12715
Access Rights: Unknown
Distribution Classification: 1
DTIC Record Exists: Yes
Distribution Change Authority Correspondence: None
Abstract: A method is presented to compensate for the mechanical properties of the body which prevent an adequate determination of heart force from the oscillating body motion produced by the force. The ballistogram recordings of the heart force were corrected to correlate directly with the heart action. The frequency response characteristic FRC and B of the external body network (all of the body mass except the heart and liver) was electrically measured with the subject on a shake-table, the head in a free-swinging hammock, and the hands gripping fixed electrode rods above the table. A correcting network was then inserted into the recording system to produce a frequency response characteristic of the measuring system which was inversely proportional to FRC and B.
Report Availability: Not available via Contrails
Date Issued: 1952-01
Index In: DTIC
Type: report