Key result
Videodensitometric analysis of digital subtraction right ventriculograms yielded a mean right ventricular ejection fraction of 66%, which correlated well (r=0.74) with the conventional single-plane method.
Why the study?
Does videodensitometric analysis of digital subtraction angiography accurately assess right ventricular ejection fraction compared to single-plane ventriculography in patients with cardiac diseases?
Cross-Sectional (n=50)
No
Does videodensitometric analysis of digital subtraction angiography accurately assess right ventricular ejection fraction compared to single-plane ventriculography in patients with cardiac diseases?
Videodensitometric analysis of digital subtraction right ventriculograms is an acceptable and convenient method for determining right ventricular ejection fraction in clinical practice.
Answers are grounded in this paper and cite their sources.
This videodensitometric method permits RV EF quantification; leaves open its accuracy, reproducibility, and clinical role.
Right ventricular ejection fractions were determined by videodensitometric computer analysis of digital subtraction angiography in 50 patients with various cardiac diseases. Using intravenous injection of 35 ml sodium meglumin diatrizoate at a constant rate of 12 ml/min, serial right ventriculograms were obtained in the right anterior oblique projection. Right ventricular enddiastolic and end-systolic counts and ejection fractions were obtained by integrating densitometric counts within the, right ventricular region of interest, in addition to application of the conventional pyramidal method. The obtained right ventricular densitometric counts correlated closely (r=0.91) with the single-plane right ventricular volumes. The right ventricular ejection fraction determined by video-densitometry also exhibited satisfactory correlation (r=0.74) with that by single-plane ventriculography. Thus, videodensitometric analysis of digital subtraction right ventriculograms are an acceptable method for the determination of the right ventricular ejection fraction, and therefore videodensitometric analysis is recommended as a convenient method for clinical practice.
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Ikeda et al. (1987) conducted a cross-sectional in Various cardiac diseases (n=50). Videodensitometric analysis of digital subtraction angiography vs. Single-plane ventriculography (pyramidal method) was evaluated on Right ventricular ejection fraction (RVEF) (r=0.74). Videodensitometric analysis of digital subtraction right ventriculograms yielded a mean right ventricular ejection fraction of 66%, which correlated well (r=0.74) with the conventional single-plane method.
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