Geometric determination of left ventricular volume from gated blood-pool studies using a slant-hole collimator

R. F. Uren, H. N. Newman, B. F. Hutton, J. Cormack, L. Bernstein, L. Allen, I. Dyer

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    Abstract

    A geometric method of measuring absolute left ventricular volumes from gated blood-pool studies obtained in a single-plane modified left anterior oblique view was evaluated prospectively in 30 patients who also underwent single-plane contrast ventriculography. The gated studies used a 30° straight-bore slant-hole collimator with the holes slanted caudally. Left ventricular end-diastolic volume was calculated using the area-length method, with semiautomatic definition of the left ventricular region of interest and the maximum length of the left ventricle. Ejection fraction was determined from the left ventricular time/activity curve. The left ventricular end-systolic volume was derived using the end-diastolic volume and ejection fraction. Correlation coefficients between the two methods were 0.93 for end-diastolic volume, 0.95 for end-systolic volume, and 0.91 for ejection fraction. This method provided accurate and highly reproducible measurements of actual left ventricular volumes and was easily applicable in routine clinical studies.

    Original languageEnglish
    Pages (from-to)541-545
    Number of pages5
    JournalRadiology
    Volume147
    Issue number2
    Publication statusPublished - 1983

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    Uren, R. F., Newman, H. N., Hutton, B. F., Cormack, J., Bernstein, L., Allen, L., & Dyer, I. (1983). Geometric determination of left ventricular volume from gated blood-pool studies using a slant-hole collimator. Radiology, 147(2), 541-545.