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Automatic backscatter analysis of regional left ventricular systolic function using color kinesis
S L Schwartz1, Q L Cao, M A Vannan
1Department of Medicine, New England Medical Center, Tufts University School of Medicine, Boston, Massachusetts 02111, USA.
The American Journal of Cardiology
|June 15, 1996
Summary
Color kinesis, a new echocardiography algorithm, offers a faster and more reliable method for assessing regional left ventricular function. It improves accuracy and reduces variability in wall motion analysis.
Area of Science:
- Cardiology
- Medical Imaging
- Echocardiography
Background:
- Traditional 2D echocardiography for regional wall motion analysis is either subjective or time-consuming.
- Quantitative echocardiography methods are often too lengthy for routine clinical use.
- A novel algorithm, Color kinesis, analyzes acoustic backscatter for real-time endocardial motion mapping.
Purpose of the Study:
- To validate Color kinesis for semiquantitative analysis of regional left ventricular systolic function.
- To assess Color kinesis for quantitative measurement of endocardial excursion.
Main Methods:
- Color kinesis algorithm utilizing acoustic backscatter analysis.
- Real-time color-encoded mapping of endocardial motion.
- Comparison with traditional 2D echocardiography for wall motion scoring and endocardial excursion measurement.
Main Results:
- Identical semiquantitative scoring in 74% of segments and 84% agreement in normal vs. abnormal.
- Reduced interobserver variability in wall motion scoring with Color kinesis.
- Excellent correlation (r=0.87) for endocardial excursion measurement with minimal mean difference (-0.05 +/- 2.0 mm).
Conclusions:
- Color kinesis is a valuable tool for assessing regional myocardial contraction.
- The algorithm provides a color map of systolic endocardial excursion.
- Color kinesis may enhance the accuracy and confidence of segmental ventricular function assessment.