#$%^&*AU2016213852A120170323.pdf#####ABSTRACT A method, including performing a first registration of a tracking system, which is configured to track a location of a probe within a human body organ, with a baseline coordinate system, and measuring first locations of the probe within the organ following the first registration. First indicators marking the first locations with a first visual effect are presented on an image of the organ, at positions on the image that are determined based on the first registration. After measuring the first locations, a second registration of the tracking system with the baseline coordinate system is performed, and second locations of the probe within the organ following the second registration are measured. Second indicators marking the second locations with a second effect, which is visually distinct from the first effect, are presented on the image of the organ, at positions on the image that are determined based on the second registration. 253/4 IDENTIFIED MAP SHIFT PRESENTATION METHOD 80 CONSTRUCT A SIMULATED SURFACE OF A CARDIAC CHAMBER 82 PRESENT THE SIMULATED SURFACE 84 INSERT A CATHETER INTO THE CARDIAC CHAMBER REGISTER THE IMPEDANCE-BASED LOCATION 86 TRACKING SYSTEM TO THE FIELD-BASED LOCATION TRACKING SYSTEM ASSIGN, FROM A SET OF COLORS, AN 88 INITIAL COLOR TO A DISPLAY COLOR [RECEIVE MEASUREMENTS INDICATING AN 90 ABLATION LOCATION PRESENT, ON THE SIMULATED SURFACE, 92 THE ABLATION LOCATION USING THE DISPLAY COLOR ABLATION 94 PROCEDURE YES COMPLETE? NO 96 YES REGISTRATION STILL VALID'? NO RE-REGISTER THE IMPEDANCE-BASED 98 LOCATION TRACKING SYSTEM TO THE FIELDBASED LOCATION TRACKING SYSTEM ASSIGN, FROM THE SET OF COLORS, A 100 PREVIOUSLY UNASSIGNED COLOR TO THE DISPLAY COLOR END FIG. 3
