#$%^&*AU2019219707A120200312.pdf#####ABSTRACT A method includes calculating a center-of-mass of a volume of an organ of a patient in a computerized anatomical map of the volume. A location is found on the anatomical 5 map, on a surface of the volume, that is farthest from the center-of-mass. The location is identified as a known anatomical opening of the organ.1/2 00 C~CN N