Point density exclusion (PDX) mapping of anterolateral (orange arrow) and posteromedial (blue arrow) PMs. A: Left ventricle endocardial activation map with relatively diffuse area of early activation. B: Areas of absent internal points and their surrounding local activation time (LAT) points (red). C: Final PDX-mapped papillary muscles with earliest activation over the anterolateral papillary muscle.
展开▼
