System and method for mapping and characterizing the coronary vasculature for epicardial ablations

A system for facilitating display of cardiac information associated with a heart of a patient, the system comprising:

• a vascular mapping catheter configured to be inserted into a blood vessel associated with the heart and comprising one or more electrodes;
• a magnetically tracked catheter configured to be inserted into the patient's body and comprising one or more additional electrodes;
• a tracking system configured to determine positions, within the patient's body, of the one or more additional electrodes;
• a display device configured to present an epicardial vascular map, the epicardial vascular map comprising an epicardial cardiac map annotated with a representation of an epicardial vascular structure;
• and
• a processing unit configured to:
• receive a plurality of electrical signals from at least one of the vascular mapping catheter and the magnetically tracked catheter;
• determine, from the electrical signals, a plurality of impedance measurements associated with the one or more electrodes of the vascular mapping catheter;
• access a field map, the field map comprising expected impedance measurements determined based on the determined positions of the one or more additional electrodes;
• determine, based on the plurality of impedance measurements and the field map, a plurality of positions, of the one or more electrodes of the vascular mapping catheter;
• generate, based on the plurality of positions of the vascular mapping catheter, the epicardial vascular structure;
• access the epicardial cardiac map;
• annotate the epicardial cardiac map with the representation of the epicardial vascular structure to generate the epicardial vascular map;
• and
• facilitate display, via the display device, of the epicardial vascular map.

A method of facilitating display of epicardial vascular information associated with a heart of a subject, the method comprising:

• receiving a plurality of electrical signals obtained from at least one of a vascular mapping catheter and a magnetically tracked catheter, wherein the vascular mapping catheter comprises one or more electrodes, and wherein the magnetically tracked catheter comprises one or more additional electrodes;
• determining, from the electrical signals, a plurality of impedance measurements associated with the one or more electrodes of the vascular mapping catheter;
• accessing a field map, the field map comprising expected impedance measurements determined based on determined positions of the one or more additional electrodes of the magnetically tracked catheter;
• determining, based on the plurality of impedance measurements and the field map, a plurality of positions of the one or more electrodes of the vascular mapping catheter;
• generating, based on the plurality of positions of the one or more electrodes of the vascular mapping catheter, the epicardial vascular structure;
• accessing the epicardial cardiac map;
• annotating the epicardial cardiac map with the representation of the epicardial vascular structure to generate the epicardial vascular map;
• and
• facilitating display, via a display device, of the epicardial vascular map.