Vocal Main Menu - GE Voluson Swift Instructions For Use Manual

Rotation Steps
Ref. Image
Start VOCAL
Note
Note

VOCAL Main Menu

Voluson™ SWIFT / Voluson SWIFT+ Instructions For Use
5831612-100 Revision 4
Defines how many contours have to be generated. The decision, which rotation step
should be chosen depends on the shape of the ROI.
For example: An angle setting of
the volume data set is rotated 30˚ and then the next trace has to be performed, and
so on. With rotation step
and 30˚ = 6 traces).
For symmetrical, roundish structures a 30˚ rotation step is fine for all generation
modes. For irregular shapes, select 15˚ for
Semi-auto Trace Finder .
for
Select the reference image to which all image dependent functions like parallel
shifts, rotations, etc. are applied.
Start the volume calculation.
Guidance and precautions for using VOCAL Contour Finder:
•
The accuracy of the VOCAL volume calculation is dependent on the accuracy of every
single VOCAL boundary.
•
The resulting VOCAL trace must be reviewed and checked by comparing the actual US
image on the monitor to the boundaries displayed in each rotation slice.
•
Only the US image on the monitor may be used for diagnostic purposes. The US Image
on the touch panel is considered a part of the user interface only. The image on the
touch panel is not in any way suited for diagnostic purposes.
•
Semi-auto Trace Finder is faster than the Trace Finder method but less accurate. The
resulting VOCAL trace has to be reviewed with extreme care.
•
If the Trace Finder modes do not lead to satisfying results, use Manual Trace to create
the VOCAL trace.
30˚ means that after the first trace has been done,
30˚ , 6 traces have to be done (6˚ = 30, 9˚ = 20, 15˚ = 12
Manual Trace and Trace Finder , and 9˚
Figure 8-24 VOCAL Main Menu
3D and 4D Mode
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