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Abstract #4142

Imaging Assessment and Feasibility of a Hydrostatically Actuated Robotic System for Real-Time MRI-Guided Interventions

Samantha Mikaiel 1,2 , Rashid Yasin 3 , Samuel Ross 4 , M. Wasil Wahi-Anwar 1 , James Simonelli 3 , David Lu 2 , Kyung Sung 1,2 , Tsu-Chin Tsao 3 , and Holden H. Wu 1,2

1 Biomedical Physics, University of California Los Angeles, Los Angeles, CA, United States, 2 Radiological Sciences, University of California Los Angeles, Los Angeles, CA, United States, 3 Mechanical and Aerospace Engineering, University of California, Los Angeles, CA, United States, 4 Santa Monica College, Santa Monica, CA, United States

In this work, we present a new robotic system prototype based on hydrostatic actuation that enables 3-degree-of-freedom (DOF) remote control of interventional devices inside the scanner bore under real-time MRI guidance. We observed negligible effects on MR image artifact, SNR, and distortion. We also demonstrated the feasibility of our new robotic system for 3-DOF control and to achieve needle placement within 1.6 mm of defined targets under real-time MRI guidance. Our new MRI-compatible robotic system can potentially provide physicians continuous access to patients during real-time MRI-guided interventions with improved visualization and accuracy.

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