ANGIOCARDIOGRAPHIC RIGHT VENTRICULAR VOLUME DETERMINATION - ACCURACY, AS DETERMINED FROM HUMAN CASTS, AND CLINICAL APPLICATION

  • 1 January 1978
    • journal article
    • research article
    • Vol. 8  (4-5) , 477-501
Abstract
Using 22 life-like human ventricular casts, the influence of spatial orientation, cardiac-phase, and biplane (BP) and single-plane (SP) methods on the accuracy of right ventricular (RV) angiocardiographic volume determination was quantitated. The best results are obtained, when a BP approach is utilized and when appropriate position and cardiac-phase correction factors (CF) are applied to the model volumes calculated by the multiple-slices (MS) and area-length (AL) methods. Statistical error is decreased and a larger systematic error (especially for SP) avoided. The MS and AL methods perform equally well; on the average; the latter method is slightly favored. The application of this concept of differentiated CF to 100 normal right ventricles of infants and children resulted in nonlinear relationships between RV volumes and their respective body surface areas (BSA) (EDV [end diastolic volume] = 73.1 .cntdot. BSA1.219, r [correlation coefficient] = 0.961, SV [stroke volume] = 46.2 .cntdot. BSA1.219, r = 0.937). The ejection fraction (63.3%) does not correlate with the BSA (r = -0.292). The right ventricle accomplishes the same SV (with respect to BSA) as the left ventricle from a higher end-diastolic and endsystolic level.

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