A patient handling system for a novel head only MRI scanner

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Magnetic resonance imaging (MRI) is the gold standard in medical practice for non-invasive tissue imaging. However, current devices are expensive to produce and require users to remain in a lying position during the scanning procedure. This can cause a negative patient experience, anxiety, claustrophobia and consequent fear of this medical technology. A current research initiative investigates the potential to position patients in an upright position in a head-only MRI scanner. We developed a patient-handling system for this novel medical technology. The new patient position offers the possibility to address the current shortcomings of conventional MRI scanners but poses a unique challenge to the patient to keep the head still for up to 20 minutes to secure high-quality scans. Patients in a lying position need to minimise head movement in two axes, however, in a seated position there are three. The project was conducted from a user-centred design perspective involving explorative research methods to develop an understanding for the context of use; the development of numerous design prototypes; usability tests with participants and MRI experts; and the production of a full-scale prototype. Our final full-scale design system consists of a movable chair that positions the user correctly inside the magnet bore. The patient can control the chair with a remote control which is a new and unique feature in the context of MRIs to reduce any feelings of anxiety and lack of control. Once the patient is positioned correctly inside the system, an inflatable head support system starts to expand around the neck, forehead and sides of the head to reduce head movement. We tested the final chair and head support system with qualitative and quantitative methods including a motion head tracking system to secure high usability of the novel system for patients and technical staff alike.

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