MIP Options

The options in the MIP display are:

• . When selected, pixels further away appear darker than those closer to the viewer, improving the sense of 3D perception.

• . If your images are not in a standard radiological slice order (slice number increasing from inferior to superior, from right to left, and from anterior to posterior) then selecting this option will reverse the slice order to give the correct orientation in 3D.

• . When selected, a glyph is shown that helps to orientate yourself with respect to the MIP viewpoint as you rotate the view. The glyph appears like this:

The faces of the glyph are labelled:

• L - when visible, the subject's left side is facing you.
• R - when visible, the subject's right side is facing you.
• A - when visible, the subject's anterior is facing you.
• P - when visible, the subject's posterior is facing you.
• S - when visible, the subject's superior is facing you.
• I - when visible, the subject's inferior is facing you.

If the image orientation cannot be determined, then the glyph will not be shown.

• Shutters. Shutters help to reduce the amount of background clutter in a MIP, by removing intensities that are outside the interesting region of your image. There are two types of shutter:

• Rectangular.

  

  This selects a rectangular region for the MIP. Parts of the image within the yellow shading do not contribute to the MIP. Drag the red handles to change the shape of the shutter.

• Elliptical.

  

  This selects an elliptical region for the MIP.

  Parts of the image within the yellow shading do not contribute to the MIP. Drag the red handles to change the shape of the shutter.

The effect of shutters can be seen below, where the same image is shown both with and without shutters.

With rectangular and elliptical shutters	Without shutters

• Colour Mapping. The image is loaded with the default colour mapping, or with the image's native colour mapping. However, you can change the colour mapping from the View menu.