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Viewer tips for PET and Nuclear Medicine Imaging

Consider the following viewer tools and tips when reviewing PET and NM images.

Series Windowing Tips

  • Invert Windowing: Press "I" to invert the window.
  • Auto-Windowing: Right-click and select Windowing > Auto for automatic adjustments. Shortcut: Press "0"

color pallet

  • Fast-Windowing: Press "J" for quick PET series windowing, or right-click and select Windowing > Color Palette Selection.
  • Toolbar > Windowing > Histogram. Showing how the data is distributed across different values for visual Windowing (W/L) changes. Y-axis zooming.

Multiplanar Reconstruction (MPR)image-png-Sep-11-2024-12-51-26-3271-PM

  • Tip: Set the layout to 1 x 1 and select an axial series first.
    For 2D multi-planar reconstruction (axial, coronal, sagittal),
  • choose MPR > Orthogonal.  Shortcut: Press Shift + M.

MIST Advanced PET

  • Allows precise adjustments of MIP thickness, supports PET fusion with customizable transparency and color palettes, and includes enhanced visualizations all within a 2x3 layout.

  • Tip: Before selecting this feature, set the layout to 1 x 1 and select the axial CT or MR series first.

 

PET

MIP, MinIP, and Average Projections

  • image-png-Sep-11-2024-12-54-19-1118-PMYou can create a Maximum Intensity Projection (MIP), Minimum Intensity Projection (MinIP), or an Average Intensity Projection (AVG)  from the drop-down menu at the bottom right corner of the panel when using MIST.

Horizontal line

  • For NM studies - Toolbar menu  > Measure > Horizontal Line

Fusion - PETCT, PETMR 

First, select the native CT or MR axial series, then click the FUSION tool, choose a corresponding axial PT series, and create fused images. Preloading will take place before the image display. Tip: Set layout to 1x1


Screenshot 2024-09-13 at 16.55.09

Fusion Series Tools Overview:

  • Change Color Range: Select a color scheme for the PET image; defaults to "Hot Iron."
  • Adjust Fusion Ratio: Drag the ratio bar to highlight the top or bottom series.
  • Windowing: Adjust the contrast and brightness of the top series via the fusion toolbar.
  • Pan Tool: Align the top fusion series for better anatomical matching.
  • Zoom Tool: Scale the top series image independently.
  • Rotate Tool: Rotate the top series image.SUV PET
  • Manual Adjustment: Shift the top fusion series to match the bottom.
  • Standard Uptake Value (SUV): Use Ellipse measurement for SUV calculations.
  • Reset: Restore all adjustments to the original state.
  • Close Fusion: Click the "X" to close the fusion series.