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. Author manuscript; available in PMC: 2010 Mar 1.
Published in final edited form as: Circ Cardiovasc Imaging. 2009 Jan 26;2(2):132–140. doi: 10.1161/CIRCIMAGING.108.790105

Figure 4. Correlation between myocardial strain and stenosis severity.

Figure 4

Scatter plots showing the relation of myocardial strain to stenosis severity demonstrated weak non-linear correlations for Sreserve (a), (r2=0.38), and for SRreserve (d), (r2=0.56). SRreserve was reduced already with moderate coronary stenosis (e), while a significant reduction in Sreserve required higher grade stenotic lesions (b). ROC analysis showed that SRreserve, with a cut-off value of SRreserve>1.64, is a highly accurate parameter for the detection of coronary artery stenosis≥50% (f).