The Factor Analysis (H2O, Lung TAC) model performs a factor analysis (FA) on dynamic cardiac H215O PET data to obtain anatomical images of the heart. Please refer to the guide of the cardiac modeling tool PCARD for details.
Principle
One TAC must be specified which is assumed to represent H215O activity in the lung. The model then proceeds as follows:
During model preprocessing three TACs are mathematically derived from the Lung TAC
During pixel-wise processing myocardium and blood pool images are calculated by a factor analyis: