The basic model configuration should include all models which may be relevant for a user. Consequently, the model list in the PKIN user interface can still be quite long. Model filtering can be used to quickly tailor it to the current task.
Model Filter Dialog Window
The filter configuration window is opened with the button 
next to the model list.
The Model filter area has five classifiers which can be enabled
Method |
Selections: Classical PET, Compartment Model, Graphical Plot, Spectral, Multilinear, Utility. |
Input |
Selections: Plasma Parent for blood-based models, Reference Tissue for reference models, Plasma Parent + Metabolites for models with metabolites entering tissue. |
Domain |
Selections: Tissue Perfusion, Receptor Binding, Heart Perfusion. |
Tracer |
Selections: Reversible, Trapping, FDG, NH3, H2O, Acetate, Rb. |
Result |
Selections: Vt, BPnd, Flux, Bmax. |
After selecting one or more filter classifiers the model list in the window is reduced accordingly.
The Adjust models to filter flag implements a prior condition on the selected models. Currently, only the Trapping has an impact. It causes setting k4=0 in the compartment models.
Show only selected models allows hiding models which satisfy the filter criterion. When closing the filter dialog, only the models selected in the list will be shown.
Filter Shortcuts in Taskbar
Note the set of radio buttons in the taskbar to the right for changing the model filter settings quickly.
While All shows the unfiltered list, Bld, NoB, Ref and Irr restrict the list to blood-based, all but blood-based, reference tissue and irreversible models, respectively.
Filter Activation
When closing the dialog window with Filter only and Fit and Filter, the entries in the Model list are reduced accordingly. Note that filtering is most easily reset by selecting All from the taskbar.
With Fit and Filter, the configured Fitting of Multiple Models is additionally executed.