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Abstract #4434

Tunable Electropermanent System for Magnetic Resonance Imaging and Magnetic Particle Propulsion

Alek Nacev1, Ryan Hilaman1, Sahar Jafari1,2, Sagar Chowdhury1, Lamar Mair1, Pavel Stepanov1, Dhruv Patel1, and Irving Weinberg1

1Weinberg Medical Physics, Inc., North Bethesda, MD, United States, 2Biomedical Engineering, George Mason University, VA, United States

Directing magnetic nanoparticles to sites within biological tissues requires both strong magnetic field gradients and accurate images of the particles and underlying anatomy. Most modern MR imaging systems require always-on magnetic field sources such as permanent magnets or superconducting coils. These field sources limit the ability to control magnetic particles within the imaging volume. Due to these field sources having a high strength always-on magnetic field, there are additional safety concerns when attempting to integrate these sources into an intraoperative arena. We built a new magnetic field source design that is capable of adjusting its magnetic field strength while retaining a low power usage to improve portability.

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