Using 2D Slab Thickness

The 2D Slab Thickness function blends a contiguous sequence of images within a single series to provide increased visual context for the active image. When you enable 2D Slab Thickness, Synapse displays a projection of the active image and the images before and after it. Thickness can be increased or decreased similar to the slab operation in a 3D Viewer.

The 2-D slab options are:

  • MIP (Maximum Intensity Projection)
  • MinIP (Minimum Intensity Projection)
  • AvIP (Average Intensity Projection)

2D Slab Thickness is only available for studies that meet the following criteria:

  • Modality is CT, PT, MR, or MG (tomosynthesis)
  • Study includes multiple images
  • Images use the same orientation

Note:

Density measurements, changing tile format, and the Magnifying glass are not supported while Slab Thickness is enabled.

Steps

  1. Right-click the image to display a context menu.
  2. Select 2D Slab Thickness > Slab Thickness On/Off.
  3. Select one of the supported rendering modes:

    2D Slab Thickness

    Description

    Cycle Projection

    Cycles through the projection mode options.

    MIP

    Show the image plane rendered by the Maximum Intensity Projection (MIP).

    MinIP

    Show the image plane rendered by Minimum Intensity Projection (MinIP).

    AvIP

    Show the image plane averaged by Multiple Planar Volume Reconstruction (AvIP).

  4. Use the mouse wheel to scroll through images in the series to which Synapse applied the 2D slab thickness.
  5. Select 2D Slab Thickness > Slab Thickness On/Off to turn off or off 2D Slab Thickness.

Note:
  • When you set a slab thickness for MG studies, all scrolling operations occur at 50% of the slab thickness. This includes cine and slider bar operations. Scrolling in this mode may skip certain frame-specific data, such as CAD markers.
  • When 2D Slab Thickness is disabled, the rendering modes associated with it are also disabled. The 2D Slab Thickness option itself is unavailable if it is not available for the current series.
  • When you enable 2D Slab Thickness, Synapse replaces the THK overlay value with Xnnn, where nnn indicates the number of images that comprise the slabbed image.

Related Topics

Configuring Custom Shortcut Keys