Fig. 7

Overview of pre-processing steps prior to shape analysis. Cardiac structures of interest are segmented manually or automatically from 3D imaging data (a). Segmented models then are cut, appropriately meshed and smoothed in order to remove irrelevant shape variability (b). Before running the shape analysis, the resulting surface models are aligned i.e. rigidly registered in order to reduce bias due to differences in scaling, transformation and rotation (c). User interaction is marked with dashed lines