fMRI-Compatible Electromagnetic Haptic Interface

Riener, Robert; Villgrattner, T; Kleiser, R; Nef, Tobias; Kollias, S (2015). fMRI-Compatible Electromagnetic Haptic Interface (Unpublished). In: 37th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC). Milan, Italy. 25.-29.08.2015.

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A new haptic interface device is suggested, which can be used for functional magnetic resonance imaging (fMRI) studies. The basic component of this 1 DOF haptic device are two coils that produce a Lorentz force induced by the large static magnetic field of the MR scanner. A MR-compatible optical angular encoder and a optical force sensor enable the implementation of different control architectures for haptic interactions. The challenge was to provide a large torque, and not to affect image quality by the currents applied in the device. The haptic device was tested in a 3T MR scanner. With a current of up to 1A and a distance of 1m to the focal point of the MR-scanner it was possible to generate torques of up to 4 Nm. Within these boundaries image quality was not affected.

Item Type:

Conference or Workshop Item (Paper)

Division/Institute:

10 Strategic Research Centers > ARTORG Center for Biomedical Engineering Research > ARTORG Center - Gerontechnology and Rehabilitation

UniBE Contributor:

Riener, Robert and Nef, Tobias

Subjects:

600 Technology > 610 Medicine & health
600 Technology > 620 Engineering

Language:

English

Submitter:

Vanessa Vallejo

Date Deposited:

16 Feb 2016 17:00

Last Modified:

17 Feb 2016 02:28

URI:

https://boris.unibe.ch/id/eprint/75570

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