MR-Compatible Instrumented Tools
Optical fibers can be used to create MR-compatible tools such as biopsy needles for performing MR-guided interventions. For example, fiber Bragg grating (FBG) sensors are small (micron-scale), immune to electromagnetic interference, and can sense strains down to a pico-strain. They can be used to enhance minimally invasive image-guided procedures by sensing tool shapes, forces, and temperatures.
A 3D shape-sensing needle allows interventional radiologists to know the trajectory and profile of their flexible tools in real-time, allowing manipulation of the tool towards its intended target.
A tip force sensing needle provides useful information during image-guided insertion of tools through various membranes during diagnostic and therapeutic procedures.
A passive master/slave manipulator enables remote trans-perineal needle placement into the prostate or other pelvic structures under direct MR guidance by a physician.
A steerable active needle provides the direct control capability of needle tip orientation, with which the needle effectively makes a detour to avoid prohibited areas or to follow a new trajectory. Optical actuation schemes make the needle MR-compatible, so that it can reduce the number of biopsy trials to reach a target precisely.
The active needle also includes optical sensors within the thin needle to measure its curvature and temperatue change for the closed loop control.
The target organ for this active needle is currently human prostate, stiffer than liver, and the needle's behavior will be investigated inside the fabricated tissue phantoms satisfying mechanical or thermal requirements.
Park, YL; Elayaperumal, S.; Daniel, B.; Ryu, SC; Shin, M; Savall, J.; Black, R.J.; Moslehi, B.; Cutkosky, M.R., “Real-Time Estimation of Three-Dimensional Needle Shape and Deflection for MRI-Guided Interventions,” Mechatronics, IEEE/ASME Transactions on , vol.15, no.6, pp.906-915, Dec. 2010
S. Ryu, Z. F. Quek, P. Renaud, R. J. Black, B. Daniel, and M. R. Cutkosky. "An Optical Actuation System and Curvature Sensor for a MR-compatible Active Needle," IEEE International Conference on Robotics and Automation (ICRA), St. Paul, Minnesota, May 14-18, 2012
S. Ryu, P. Renaud, R. J. Black, B. Daniel, and M. R. Cutkosky. “Feasibility Study of an Optically Actuated MR-compatible Active Needle," IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS), San Francisco, California, September 25-30, 2011
Y-L. Park, S. Elayaperumal, S. Ryu, B. Daniel, R. J. Black, B. Moslehi, and M. R. Cutkosky. “MRI-compatible Haptics: Strain sensing for real-time estimation of three dimensional needle deflection in MRI environments", International Society for Magnetic Resonance in Medicine (ISMRM) 17th Scientific Meeting and Exhibition, Honolulu, Hawaii, April 18-24, 2009
Y-L. Park, S. Elayaperumal, B.L. Daniel, E. Kaye, K.B. Pauly, R.J. Black, and M.R. Cutkosky, “MRI-compatible Haptics: Feasibility of using optical fiber Bragg grating strain-sensors to detect deflection of needles in an MRI environment”, International Society for Magnetic Resonance in Medicine (ISMRM) 2008, 16th Scientific Meeting and Exhibition, Toronto, Canada, May 2008