A system for facilitating display of cardiac information associated with a heart of a patient, the system comprising: a display device configured to present an epicardial vascular map, the epicardial vascular map comprising an epicardial cardiac map (210, 306) annotated with a representation of an epicardial vascular structure; and a processing unit (120, 200) configured to: receive 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; 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 determined positions of the one or more additional electrodes of the magnetically tracked catheter; 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 one or more electrodes of the vascular mapping catheter, the epicardial vascular structure; access the epicardial cardiac map (210, 306); annotate the epicardial cardiac map (210, 306) 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 display device configured to present an epicardial vascular map, the epicardial vascular map comprising an epicardial cardiac map (210, 306) annotated with a representation of an epicardial vascular structure; and a processing unit (120, 200) configured to: receive 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; 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 determined positions of the one or more additional electrodes of the magnetically tracked catheter; 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 one or more electrodes of the vascular mapping catheter, the epicardial vascular structure; access the epicardial cardiac map (210, 306); annotate the epicardial cardiac map (210, 306) 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. receive 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; 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 determined positions of the one or more additional electrodes of the magnetically tracked catheter; 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 one or more electrodes of the vascular mapping catheter, the epicardial vascular structure; access the epicardial cardiac map (210, 306); annotate the epicardial cardiac map (210, 306) 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.