A system for displaying to a user a map of a portion of a patient's anatomy comprising: a display apparatus comprising a graphical user interface, wherein the graphical user interface is configured to depict at least a portion of the patient's heart; and computing apparatus coupled to display apparatus and configured to provide the graphical user interface displayed on the display apparatus to assist a user in selecting a pacing location, wherein the computing apparatus is further configured to: provide one or more images of the patient's heart, provide a phrenic nerve stimulation map comprising a plurality of areas (152, 162) corresponding to different regions of a human heart, wherein each area of the plurality of areas is configured to provide phrenic nerve stimulation information for the corresponding region of the human heart, characterized by the computing apparatus further being configured to detect one or more features of the patient's heart within and based on the one or more images of the patient's heart, project the phrenic nerve stimulation map on a graphical representation of at least a portion of the patient's heart based on the one or more detected features of the patient's heart, and display, on the graphical user interface, the graphical representation of at least a portion of the patient's heart and the projected phrenic nerve stimulation map. a display apparatus comprising a graphical user interface, wherein the graphical user interface is configured to depict at least a portion of the patient's heart; and computing apparatus coupled to display apparatus and configured to provide the graphical user interface displayed on the display apparatus to assist a user in selecting a pacing location, wherein the computing apparatus is further configured to: provide one or more images of the patient's heart, provide a phrenic nerve stimulation map comprising a plurality of areas (152, 162) corresponding to different regions of a human heart, wherein each area of the plurality of areas is configured to provide phrenic nerve stimulation information for the corresponding region of the human heart, characterized by the computing apparatus further being configured to detect one or more features of the patient's heart within and based on the one or more images of the patient's heart, project the phrenic nerve stimulation map on a graphical representation of at least a portion of the patient's heart based on the one or more detected features of the patient's heart, and display, on the graphical user interface, the graphical representation of at least a portion of the patient's heart and the projected phrenic nerve stimulation map. provide one or more images of the patient's heart, provide a phrenic nerve stimulation map comprising a plurality of areas (152, 162) corresponding to different regions of a human heart, wherein each area of the plurality of areas is configured to provide phrenic nerve stimulation information for the corresponding region of the human heart, characterized by the computing apparatus further being configured to detect one or more features of the patient's heart within and based on the one or more images of the patient's heart, project the phrenic nerve stimulation map on a graphical representation of at least a portion of the patient's heart based on the one or more detected features of the patient's heart, and display, on the graphical user interface, the graphical representation of at least a portion of the patient's heart and the projected phrenic nerve stimulation map.