5-38 Image Optimization 
View  Curved VOI 
U/D  At the upper part of curved VOI
D/U  At the lower part of curved VOI
L/R  At the left part of curved VOI 
R/L  At the right part of curved VOI 
F/B  Displays as a dot 
B/F  Displays as a dot 
 
NOTE:  To define a ROI, please try to cut the useless data as to reduce the volume 
data, shortening the time for image storing, processing and rendering. 
  3D view direction definition 
You can adjust the view direction of the ROI. 
 
 
a. Up/Down  b. Down/Up 
 
 
c. Left/Right  d. Right/Left 
 
 
e. Front/Back  f. Back/Front