1. A method of displaying surgical path data in a computing device having an input device, a display, a memory and a processor interconnected with the input device, the display, and the memory, the method comprising: storing, in the memory, (i) an image of a volume of patient tissue having an outer surface, and (ii) anatomical data defining a plurality of anatomical features of the volume; receiving, at the processor, an identifier of a target location within the volume; at the processor, generating a plurality of paths from the outer surface to the target location, each path having a start point located on the outer surface, and an end point at the target location; for each of the plurality of paths, determining a score at the processor indicating a number of the anatomical features intersected by the path; and controlling the display to present the outer surface and, at the locations of the start points, indications of the respective scores of the paths corresponding to the start points.