5-38 Image Optimization 
 
  ROI size and position 
Tap the corner (green dot) of the ROI and drag to change the size. 
Tap inside the ROI box and drag to change the position.   
  Curved VOI adjustment 
Tap the cut plane and drag to change the curved VOI position. This function changes the 
curved shape of the nearest VOI section and facilitates observation of the volume data of 
interest. 
The orientation and shape (line or dot) of curved VOI vary depending on the view 
direction: 
At the upper part of curved VOI 
At the lower part of curved VOI 
At the left part of curved VOI 
At the right part of curved VOI 
  MPR 
The principle of 3D imaging is to render a 3D image from multiple 2D image information. The 
following describes the spatial relationship of 3 MPRs (A, B and C) and the 3D image (VR). 
In the quad display format view, the screen displays 3 MPRs (A, B and C) and the 3D image.