Quantitative Left Ventricular Wall Motion Analysis: A Comparison of Area, Chord Radial Methods

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Abstract

SUMMARY

We were interested in divising a relatively simple quantitative technique that could be used on a routine clinical basis for wall motion analysis. Three quantitative methods of left ventricular (LV) regional analysis were compared in the 300 right anterior oblique 60° left anterior oblique projections. The control group consisted of 17 patients with qualitatively normal LV wall motion; the abnormal group comprised 17 patients with at least one region of severe, qualitative wall motion abnormality. Normal regional values were determined for area, chord radial methods by applying the techniques to the ventriculograms of the control group. Each technique was then applied to the abnormal group's ventriculograms to determine the percentage of qualitatively abnormal regions not detected by each method. The area method had the lowest failure rate (p ≤ 0.001) the best separation of measured normal abnormal regions' ejection changes (p ≤ 0.001), best reflected symmetric uniform motion of the ventricular silhouette. We conclude that the area method, of the techniques examined, was best for the quantitative analysis of LV wall motion abnormalities.

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