#$%^&*AU2019222902A120200514.pdf#####ABSTRACT A method includes transmitting electrical signals between one or more pairs of body-surface electrodes 5 attached to a body of a patient. Electrical potentials resulting from the transmitted electrical signals are acquired by an outer-facing electrode and an inner-facing electrode of a medical probe inserted in an organ of the patient. A proximity of the medical probe to surface tissue 10 of the organ is estimated based on the electrical potentials acquired by the outer-facing electrode. A position of the medical probe within the organ is estimated based on the electrical potentials acquired by the innerfacing electrode.1/2 d co I--" LO C l 01) 04 04 LO C'n 00 0 0 .............. CIO ............... clq clq ....... . ..... CY) CY) CY) 00 CY) Ce) Q) Ce) LO CN CL LO I'll
