Curve Layout

After data loading the time-activity informations of the current region are shown in the curve display in a default layout. The large area contains

• the Measured values representing the tissue TAC,
• the Input curve model which is used as the input curve for the model calculations,
• the Whole blood model used for blood spillover corrections,
• and the Model Curve which results from evaluating the current model configuration with the input curve.

There are some additional curves available for display which are hidden per default (box initially not checked). For instance, if you scroll down the control area, you will find the compartment concentrations depending on the configured model.

The small residuals curve display at the bottom visualizes the agreement between the measurements and the model curve. The aim is to find a model which has no significant trend in the residuals left. Note that currently the unweighted residuals are shown. However, for fitting purposes weights may be applied to them.

The manipulations available in the curve display are explained in the next section.