QTV3 Usage

Drag and Drop:

  • Drop pvm or raw volume files into the window
  • Drop a selection of DICOM images into the window

Data repository:


Example data set:



  • Rotate
  • Tilt
  • Zoom


  • Click at the render view to select a window of scalar values to be displayed
  • Horizontal mouse cordinate defines the center of the scalar window to be displayed.
  • Vertical mouse cordinate defines the width of the scalar window to be displayed.
  • Keeping the button pressed displayes the histogram of the volume as overlay.

Common Windowing Use Cases:

  • To eliminate noise (which has low scalar values) click at the right top edge of the render view.
  • To mask bone of a CT Scan select a range of medium scalar values by clicking at the center of the render view.
  • To explore the data set keep the mouse pressed and move it to adapt the scalar window until it fits.


  • Modify the opacity of the volume by clicking at the “Opacity” button on the right (or the “Emission” and “Absorption” sliders in the lower interface section).
  • Then dragging the mouse up and down modifies the brightness and translucency of the volume rendering.


  • Define view-aligned front clipping plane with the “Clip” slider.
  • The clip plane is parallel to the view plane, it does not stay fixed to the volume.
  • To make the actual clip plane fixed to the volume click at the “Tack” Button.