Image Optimization 5-115
Displacement curve X-axis represents time (s);
Y-axis represents displacement (mm).
Strain curve
X-axis represents time (s);
Y-axis represents deformation of the tissue (%).
Strain-rate curve
X-axis represents time (s);
Y-axis represents strain by time (s
-1
).
5
—Displays corresponding time of AVO (aortic valve open)/AVC (aortic valve close)/MVO (mitral valve
open)/MVC (mitral valve close).
6
—Displays cardiac segmentation model, and each segment name is illustrated beneath the model.
In the figure,
marks the peak position of the curve.
Under tracking status, click on a segment in the cardiac segmentation model. The segment has
“X”
mark and its corresponding calculating is eliminated.
Tap certain segment in the cardiac segmentation model, the segment will turns grey and its
corresponding curve no longer displays.
You can get the current X/Y axis value by moving the cursor onto one point on the curve; and if you
press <Set> at this time, the frame marker will move to the spot.
The segment boundary color indicates the tracking quality.
5.16.3 Select Image and Cardiac Cycle
You can select images with a better image quality so as to guarantee the analysis result.
Switch the cine file
1. Tap [Review] to enter the review state on touch screen.
2. Double-click the target file;
3. The system closes current displayed file and switch to the newly selected file;
Switch cardiac cycle within the cine file
Tap [Circle] to select when opening a cine which includes multiple cardiac cycles.
5.16.4 Myocardial Boundary Tracing
The system provides 2 kinds of tracing method for 2 kind of sections:
Long axis section (A4C, A2C, ALAX): 3-point method and manual tracing method are both
available.
3-point method
As shown in the following figure, after operation by pressing <Set> to place 3 points on the
image, the system generates the trace automatically.
1
2
3
Manual trace method
