Quantitative Analysis
Vivid S5/Vivid S6 User Manual 387
R2424458-100 Rev. 2
that the Strain cursor is within the myocardium when anchoring
the sample area.
Trace from a freehand sample area
1. Select the Pencil button .
2. Trackball to one of the Cineloop windows.
The trackball cursor is changed to a cross.
3. Press and hold down the
SET button while drawing a
sample area with the trackball.
4. Release the
SET button.
The sample area is automatically closed.
The trace is updated accordingly in the Analysis window.
Manual tracking of the sample area
(dynamic anchored sample area)
The sample area can be moved within the loop to ensure that
data in the trace are generated from the same anatomical
location during the cyclic motion of the heart.
1. Place a sample area over a region of interest.
Note the anatomical location of the sample area.
2. Using the trackball, scroll to a new frame.
3. Press
TRACKBALL until the QA trackball assignment is
selected.
4. Trackball to the sample area.
5. Press
SET.
The sample area is unanchored.
6. Drag the sample area to the corresponding anatomical
location in the new frame.
In the original
frame and this par-
ticular frame the
sample area is
marked with an an-
chor.
When the sample area is anchored in more than one
frame, linear interpolation is performed, so that the sample
area is smoothly moved between the anchored positions in
the selected frames when running the cineloop.
7. Press
TRACKBALL until the Scroll trackball assignment is
selected.
8. Using the Trackball, scroll through the cineloop and control
that the sample area follows the moving anatomical
structure.
9. Add anchored sample areas in several frames to obtain a
more accurate displacement of the sample area.
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