#$%^&*AU2018278859A120190718.pdf#####ABSTRACT A method includes receiving one or more signals indicative of a position of a distal-end assembly of a 5 medical probe within an organ of a patient. Based on the received signals, an inner volume that is confined within the distal-end assembly is determined. An anatomical map of the organ is updated, to denote the inner volume of the distal-end assembly as belonging to an interior of the 10 organ.1/3 0c C~C) 00 C~CN N