The various 3D mapping systems employ electroanatomical navigation, which uses strategically placed electromagnets, patches that detect micro-impedance differences (small changes in electrical resistance) inside the body, or a combination of both to precisely guide catheters into place. Some mapping systems can even transform 2D images produced by intracardiac echocardiography (ICE) into detailed 3D models.

These systems can quickly and accurately generate 3D models of cardiac structures and arrhythmias, providing critical information to physicians during complicated anatomical cardiac ablations.