Figure 5: For the transformation shown, only voxel B is estimated as containing CA as it is inside the LA and contrasted in both planes. Voxel C is only contrasted in plane A but not in plane B. Voxel A is filled with contrast in both planes, but it is outside of the LA and therefore considered as uncontrasted. If the LA is moved such that its projections in A and B cover the contrasted area, this voxel will also be considered as contrasted, hence, increasing the consistency with the CADE.