Appendix C  Control Panel 
C - 8  Instructions for Use 
PRIORITY 
Imaging 
Cycles trackball control through the imaging modes. For example, during Doppler and 
2D-mode, press PRIORITY to assign trackball control to the Doppler gate (D Gate) or the 
2D-mode field of view (
).  
3D or 4D 
Activates the 2D FOV tool or the ROI/VOI tool. Cycles through the available tools for the 
current task. For example, when working with volumes, displays the Slice tool and when using 
the amnioscopic rendering method, displays the Light tool. 
Measurement  Cycles through the available caliper sets. 
Body Marker  Activates the body marker or transducer marker for repositioning with the trackball. 
NEXT 
--- 
Cycles through the imaging mode tools currently controlled by the trackball. For example, 
during Doppler, press NEXT to activate the Doppler gate positioning function or the Doppler 
gate steering function.  
When the trackball is assigned to the pointer function, the NEXT key is equivalent to the right 
mouse button on a personal computer. 
Activates the rotate function or the pan function. 
Measurement  Cycles through the caliper end points. 
Ellipse  Anchors the end point for the major axis. 
eSie Calcs 
Auto Volume 
Repositions the measurement region of interest. 
3D or 4D 
Activates the rotate function or the pan function. In 4D, cycles through the active tool functions 
and polygon markers. 
Review of 
4D volumes 
When a quadrant is not selected, activates the measurement function. 
Patient Browser 
Displays a shortcut menu of available selections. 
Velocity Vector 
Anchors the last marker, for example, to complete a trace or freeform drawing.