Concepts for augmented reality visualisation to support needle guidance inside the MRI

André Mewes, Florian Heinrich, Bennet Hensen, Frank Wacker, Kai Lawonn, Christian Hansen
2018 Healthcare technology letters  
During MRI-guided interventions, navigation support is often separated from the operating field on displays, which impedes the interpretation of positions and orientations of instruments inside the patient's body as well as hand-eye coordination. To overcome these issues projectorbased augmented reality can be used to support needle guidance inside the MRI bore directly in the operating field. The authors present two visualisation concepts for needle navigation aids which were compared in an
more » ... uracy and usability study with eight participants, four of whom were experienced radiologists. The results show that both concepts are equally accurate (2.0 + 0.6 and 1.7 + 0.5 mm), useful and easy to use, with clear visual feedback about the state and success of the needle puncture. For easier clinical applicability, a dynamic projection on moving surfaces and organ movement tracking are needed. For now, tests with patients with respiratory arrest are feasible.
doi:10.1049/htl.2018.5076 pmid:30464849 pmcid:PMC6222244 fatcat:bfu73fckkjbwbbn5upacdgfywy