In some embodiments, the invention involves a method including segmenting an utterance into at least a first segment and a second segment, wherein a boundary between the first and second segments corresponds to a break in the utterance. The drive system has a stator rigidly mounted in a housing having an outer bearing surface that is continuous with the outer surface of mounting supports and avoids hard-to-clean nooks. The patient is issued with an access code which is provided to a user who is authorised by the patient to access the patient’s diagnostic image.