Defaults: 1X 2X 3X 4X      
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Myocardial Performance Time or Tei Index
Calcs>Myocardial Performance>MPT(Tei Index)>1
Systole Start Time: msec
Systole End Time: msec
Ejection Start Time: msec
Ejection End Time: msec
IMP: %

Status Value
Normal < 40 %
Mild Dysfunction 40-60 %
Mod Dysfunction 60 - 100 %
Severe Dysfunction > 100%
How to calculate a IMP.
Step 1: A CWD of the LVOT, RVOT, MV or TV. The index of myocardial performance compares mechanical systole (A) to the ejection time period (B).  Alternatively, the ejection period for a mitral/tricuspid regurgitant jet can be used for the ejection period (B) since, for mitral/tricuspid regurgitation, the ejection period and the mechanical systolic period are the same.  As the ejection time period converges on the mechanical systolic period, the ejection force is decreasing.

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