When arriving at the MASK panel, the display shows a fusion of the AVERAGED PET with the generated MASK .
As described above, the mask can be edited if necessary.
Next, the segmentation method in the lower section needs to be switched to ORGAN SEPARATION. Consequently, its configuration parameters are shown.
As the method has been developed for the functional segmentation of dynamic rodent images, it incorporates related prior knowledge. Particularly, it accounts for specific noise characteristics in the PET image. Therefore, the image Reconstruction method (FBP or ITERATIVE) and the isotope Half Life need to be specified properly.
Additionally, three parameters need to be set for the segmentation:
Once an appropriate body mask is ready and the segmentation parameters have been defined, please start calculations with the Segmentation button. The required processing time depends on several factors including the matrix size, and may take several minutes. The segmentation result is shown on the next SEGMENTS panel.