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Videodensitometric determination of left ventricular ejection and filling characteristics

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Abstract

Left ventricular ejection fraction and values proportional to mitral and aortic flow were measured throughout the cardiac cycle by videodensitometric analysis of left ventricular roentgen angiograms. The technique was used simultaneously with measurement of the dimensions of the ventricle to provide absolute values for comparison. Sensitivity of the technique was tested by the ability to detect the atrial contribution to mitral flow and left ventricular chamber volume. Roentgen videodensitometry has the advantages that much information can be extracted from videoangiograms in real-time (on-line, if need be), it requires relatively low concentration of contrast medium, and it is self-calibrating.

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Author notes

  1. Earl H. Wood (Professor of Physiology, Mayo Medical School, and a Career Investigator of the American Heart Associatio)

    Present address: Mayo Clinic, 200 First Street SW, 55901, Rochester, Minnesota

  2. Erik L. Ritman (Assistant Professor of Physiology)

    Present address: Mayo Medical School (University of Minnesota), Rochester

  3. Ralph E. Sturm (Associate Professor of Physiology)

    Present address: Mayo Graduate School of Medicine (University of Minnesota), Rochester

Authors and Affiliations

  1. Mayo Clinic, 200 First Street SW, 55901, Rochester, Minnesota

    Joachim H. Bürsch,  Erik L. Ritman (Assistant Professor of Physiology) &  Ralph E. Sturm (Associate Professor of Physiology)

  2. Mayo Foundation, 200 First Street SW, 55901, Rochester, Minnesota

    Joachim H. Bürsch,  Erik L. Ritman (Assistant Professor of Physiology),  Ralph E. Sturm (Associate Professor of Physiology) &  Earl H. Wood (Professor of Physiology, Mayo Medical School, and a Career Investigator of the American Heart Associatio)

Authors
  1. Joachim H. Bürsch
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  2. Erik L. Ritman
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  3. Ralph E. Sturm
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  4. Earl H. Wood
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Additional information

This investigation was supported in part by Research Grants HL-3532 and HL-4664 from the National Institutes of Health, Public Health Service, and NGR 24-003 from the National Aeronautic and Space Administration

Dr. Bürsch was a Research Assistant, Department of Physiology and Biophysics, Mayo Clinic and Mayo Foundation, and is Assistant Professor of Pediatrics, University of Kiel, Germany

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Bürsch, J.H., Ritman, E.L., Sturm, R.E. et al. Videodensitometric determination of left ventricular ejection and filling characteristics. Ann Biomed Eng 3, 62–71 (1975). https://doi.org/10.1007/BF02584489

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  • DOI: https://doi.org/10.1007/BF02584489

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