Fig. 9.

Illustration about the necessity for 3D-LA assessment. A presents the enface view from the LA cavity to the MV and TV. In B the apical 3D views (4ChV, 2ChV—apical 4- and 2-chamber view; aLAX—apical long axis view) within the 3D data set are centered to the LV illustrating the axis deviation of the LA mainly in the aLAX. In C the LA long axis is centered to document the deviation of LV an LA center line. In D a multisclice presentation of the 3D data set illustrate the complete acquisition of the LA volume. In E the LA alignment for LA volume determination is shown. In F the diastolic LA volume, in G the systolic LA volume is presented by a 3D volume calculation