GE Voluson S6 Basic User Manual page 346

Volume Mode
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Return to the "VOCAL Modes" menu, where you can define a new contour.
Return to the "VOCAL - Edit" menu, where you can readjust the defined
contour.
To choose the Reference image
The rotary buttons and the trackball are assigned to the selected reference image for adjusting
the position, magnification and rotation of the shell image.
To rotate and shift the reference- and VOCAL 3D image
Use the [X] , [Y] and [Z] mode controls to rotate around the X-, Y- and Z-axis.
Use the [Parallel Shift] mode control to shift along the Z-axis.
Voluson® S6/S8 Basic User Manual
5433669-100 Revision 4