GE Vivid S70, User Manual

Page: 393 / 709

Using Q Analysis
Vivid S70 / S60
–
User Manual
9-11
BC092760-1EN 01
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 is generated from the same anatomical location
during the cyclic motion of the heart.
1. Freeze the image and set a sample area over a region of
interest.
Note the anatomical location of the sample area.
2. Press Trackball until the Scroll trackball assignment is
selected. Select a new frame.
3. Press Trackball until the QA trackball assignment is
selected.
4. Drag the sample area to the corresponding anatomical
location in the new frame.
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.
NOTE: In the original frame and this particular frame the sample
area is marked with an anchor.
5. Press Trackball until the Scroll trackball assignment is
selected.
6. Scroll through the cineloop and control that the sample area
follows the moving anatomical structure.
7. Add anchored sample areas in several frames to obtain a
more accurate displacement of the sample area.
To move a dynamic anchored sample area
1. Freeze the image.
2. Press
Trackball until the Scroll trackball assignment is
selected.
3. Scroll through the cineloop to display one of the frames
where the sample area was anchored.
NOTE: In these frames the sample area is marked with an anchor.
4. Press Trackball until the QA trackball assignment is
selected.
5. Place the cursor on the sample area to move, in one of the
Cineloop
windows.
6. Press Select .
The sample area is unanchored.
7. Drag the sample area to a new location.
8. Press
Select to anchor the sample area to the new location.