Measuring Slope
Introduction
Use the Slope option to calculate acceleration or deceleration by measuring the rate of change of a velocity profile using two points in a Doppler or M-Mode ultrasound image. The time component is calculated as the amount of time it takes for the velocity to go back to the baseline.
Steps
- Right-click the image to display a context menu.
- Select Annotations > Slope.
- Place the cursor in the image at the position where you want to begin drawing the Slope annotation.
- Click once to begin the Slope annotation.
- Click again to complete the annotation.
- Optional: After you create a Slope annotation, you can click and drag the control points to reposition them and move or delete the annotation. See Manipulating Annotations.
Results
As you complete a Slope annotation, Synapse displays the slope, time, and velocity annotations in an ordered list in the Results overlay. Hover over a measurement in the Results overlay to highlight the annotations in the image.
Additional Options
Click Slope 
on the icon menu.