Aspects and embodiments provide an MRI scanner-compatible virtual reality system comprising: user equipment locatable within an MRI scanner bore, the user equipment being configured to provide a subject with an immersive virtual environment; the system further comprising: at least one sensor configured to track eye movement of the subject; wherein interaction of the subject with the immersive virtual environment is controlled by the tracked eye movement. Aspects and embodiments may be implemented in a manner which recognises that VR techniques, which typically rely upon dynamic movement of a VR subject, can be used to aid with maintenance of minimal motion of a subject to be placed within an MRI scanner bore. Implementations may be such that calmness of a subject can be increased and awareness of their physical surroundings diminished, thus allowing for successful MRI image acquisition whilst seeking to minimise distress, boredom and/or frustration experienced by the subject under study.