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Biplane roentgen videometric system for dynamic, 60/sec, studies of the shape and size of circulatory structures, particularly the left ventricle.An operator interactive video system for the measurement of roentgen angiographically outlined structures is described. Left ventricular volume and three-dimensional shapes are calculated from up to 200 pairs of diameters measured from ventriculograms at the rate of 60 pairs of biplane images per second. The accuracy and reproducibility of volumes calculated by the system were established by analysis of roentgenograms of inanimate objects of known volume and by comparison of left ventricular stroke volumes calculated by the system with the stroke volumes calculated by an indicator-dilution technique and an aortic root electromagnetic flowmeter. Computer-generated display of the large amounts of data obtained by the videometry system is described.
Document ID
19730052996
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Ritman, E. L.
Sturm, R. E.
Wood, E. H.
(Mayo Clinic and Mayo Foundation Rochester, Minn., United States)
Date Acquired
August 7, 2013
Publication Date
August 1, 1973
Publication Information
Publication: American Journal of Cardiology
Volume: 32
Subject Category
Biotechnology
Accession Number
73A37798
Funding Number(s)
CONTRACT_GRANT: NIH-HE-4664
CONTRACT_GRANT: NIH-FR-7
CONTRACT_GRANT: NIH-HE-3532
CONTRACT_GRANT: NGR-24-003-001
Distribution Limits
Public
Copyright
Other

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