Example 2: Animated Texture on Cardiac Surface

This example illustrates the capability of P3D to project a dynamic texture onto a static surface using a dynamic NH₃ cardiac PET study. It can be reproduced with data of patient PCARD1 available in the example PMOD database after installation.

Anatomy

Load the dynamic NH3, Stress study of patient PCARD1 into the Input area.
With the external tools, average the frames 8 to 18.
Smooth the generated average image in a similar way by applying an 8mm Gaussian Smooth 3D on the Filter tab.
Define REGION GROWING segmentation with threshold 65.5 for the smoothed, averaged data set. Click into the myocardium and start the Surface Rendering.
A smooth shape of the myocardium is shown in the scene, represented by the SR RG_65.5 object in the tree.

Cine of Dynamic
Uptake

Load the same dynamic NH3, Stress study of patient PCARD1 into the Texture area.
Select the SR RG_65.5 object in the tree, and switch the texturing to the dynamic series.
On the Input pane, configure the cine player to show a movie in time (Frames mode), then start. The uptake over time is now a shown as a dynamic texture on the object surface.

Note: When a dynamic study is segmented and the F button (single frame) is not selected, one object per time will be created. In this case a cine of the Input images can be run to show an animation of the object shape over time. An obvious application for this feature is the rendering of a beating heart from a gated acquisition.