GE Vivid S70, Руководство пользователя

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Advanced cardiac measurements and analysis
Vivid S70 / S60
–
User Manual
8-41
BC092760-1EN 01
2. Acquire 2D grey scale cineloops of an Apical 4 chamber
view and an Apical 2 chamber view.
Acquisition requirements
• The frame rate should be exceeding 40 frames per second.
A higher frame rate is recommended for high heart rate.
• The system should be configured to store 100 ms before
and after each heart cycle.
• If the acquisition has more than one heart cycle, the
analysis will by default be done on the second to last heart
cycle.
• The entire myocardium should be visible.
• A depth range that includes the entire left ventricle should
be used.
Starting AutoEF
1. Open any one of the stored apical views and press
Measure .
2. Select
AutoEF
in the Measure menu. The tool will launch
and start up in the
Select View
stage (See Figure 8-21).
Figure 8-21. Select View stage
AutoEF on the A4CH view
1. When in
Define ROI
stage:
Annotate the view by clicking one of the view labeling
buttons (
A4CH , A2CH ).
Pay attention to the left/right orientation of the image by
comparing the LV wall names with a visual inspection of the
image. If the image orientation is wrong:
•
Go back to the
Select view
stage.
CAUTION
AutoEF is only recommended for adult cardiac images
acquired with the following probes: M5Sc-D or 3Sc-RS. The
measurement accuracies of the 2D Auto EF measurement
values reported in the Reference manual are verified with these
probes.