1. A computer-implemented method, comprising: obtaining, by a computer processor, user-input of at least one of a code and a file, wherein: the at least one of the code and the file was generated prior to the input of the at least one of the code and the file, during a first session that was associated with a first patient and during which a stimulation therapy of the first patient was controllable; and the obtaining of the user-input of the at least one of the code and the file is in a second session that is associated by the processor with a second patient and during which a stimulation therapy of the second patient using a stimulation leadwire is controllable; responsive to the input of the at least one of the code and the file, obtaining, by the processor, data representing a volume, the volume being one of (a) a target volume of tissue to be activated by the stimulation therapy, (b) at least one target anatomical nucleus to be activated by the stimulation therapy, (c) a side effect volume of tissue in which to avoid stimulation by the stimulation therapy, (d) at least one side effect anatomical nucleus in which to avoid stimulation by the stimulation therapy, and (e) a volume of tissue previously estimated to be activated for a user input set of stimulation parameters; displaying, by the processor and in a display device, a representation of the volume relative to at least one of a graphical representation of the stimulation leadwire and a graphical representation of an anatomical region; analyzing a combination of a plurality of volumes, including the volume obtained using the at least one of the code and the file; based on the analysis, generating a new volume during the second session associated with the second patient; and saving the new volume, wherein the saved new volume is accessible in a session associated with the first patient.