Biplane roentgen videometric system for dynamic (60/Sec) studies of the shape and size of circulatory structures, particularly the left ventricle

Erik L. Ritman, Ralph E. Sturm, Earl H. Wood

Research output: Contribution to journalArticle

23 Scopus citations

Abstract

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 indicator-dilution technique and aortic root electromagnetic flowmeter. Computer-generated display of the large amounts of data obtained by the videometry system is described.

Original languageEnglish (US)
Pages (from-to)180-187
Number of pages8
JournalThe American journal of cardiology
Volume32
Issue number2
DOIs
StatePublished - 1973

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine

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