Frishman et al., Enabling In-Bore MRI-Guided Biopsies, IEEE Haptics Symposium 2020

Samuel Frishman, Ali Kight, Ileana Pirozzi, Mela C. Coffey, Bruce L. Daniel, Mark R. Cutkosky, Enabling In-Bore MRI-Guided Biopsies With Force Feedback, Proceedings of IEEE Haptics Symposium 2020

https://doi.org/10.1109/TOH.2020.2967375

Limited physical access to target organs of patients inside an MRI scanner is a major obstruction to real-time MRI guided interventions. Traditional teleoperation technologies are incompatible with the MRI environment and although several solutions have been explored, a versatile system that provides high-fidelity haptic feedback and access deep inside the bore remains a challenge. We present a passive and nearly frictionless MRI-compatible hydraulic teleoperator designed for in-bore liver biopsies. We describe the design components, characterize the system transparency, and evaluate the performance with a user study in a laboratory and a clinical setting. The results demonstrate less than 5% difference between input and output forces during realistic manipulation. A user study with participants conducting mock needle biopsy tasks indicates that a remote operator performs equally well when using the device as when holding a biopsy needle directly in hand. Additionally, MRI compatibility tests show no reduction in signal-to-noise ratio in the presence of the device.

#haptics #haptics2020 #medicalrobotics

https://www.hapticssymposium.org/

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