Deep brain path planning using augmented reality

Disclosed herein is a medical system (200, 300) comprising an augmented reality system (204) configured for rendering a virtual object within a visual three-dimensional field of view of an operator (214). Execution of the machine executable instructions (230) causes the computing system to: receive (400) segmented medical imaging data (100, 232) describing a continuous volume of a subject (210), the continuous volume of the subject including a skull surface (106) of the subject and at least a portion of a brain (102) of the subject; controlling (402) the augmented reality system to determine a registration (234) between the subject and the segmented medical imaging data; receiving (404) a target site (104) within at least a portion of the brain; discretizing (406) the skull surface to define a plurality of access locations (108); determining (408), for each of the plurality of entry positions, a straight path (110) extending to the target site; assigning (410) a path score (238) to a straight path for each of