Why the study?
Does digital videodensitometric analysis accurately measure left ventricular ejection fraction compared to classical geometric methods in patients undergoing digital subtraction angiography?
Does digital videodensitometric analysis accurately measure left ventricular ejection fraction compared to classical geometric methods in patients undergoing digital subtraction angiography?
Digital videodensitometry is a valuable and accurate method for quantifying left ventricular ejection fraction, showing strong correlation with classical geometric methods.
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May support videodensitometry for LVEF quantification in angiography; leaves open larger prospective validation.
Left ventricular (LV) function was studied in 30 patients using digital subtraction angiography by the intravenous approach. Each ventriculogram was processed with a specific videodensitometric analysis to determine LV ejection fraction. The program was verified in an experimental set-up consisting of nine latex balloons filled with contrast medium. Its validation has been established by comparing videodensitometric results with classical results supplied by geometric methods. A good correlation was obtained (r = 0.9449) and, furthermore, with experimental models, videodensitometric analysis seemed to be more accurate than geometric analysis. Digital videodensitometry appears to be a valuable and accurate method for quantifying LV function, and a promising technique for determination of the real volumes.
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Gaux et al. (1987) studied this question.
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