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Abstract #1772

Breast and Chest RF Design and Optimization for Ultra-low Field MRI

Torben P.P Hornung1,2,3, Neha Koonjoo1,2, Susu Yan3,4, Matthew S Rosen1,2,5, and Thomas R Bortfeld3,4
1Department of Radiology, A.A Martinos Center for Biomedical Imaging / MGH, Charlestown, MA, United States, 2Harvard Medical School, Boston, MA, United States, 3Department of Physics, ETH Zürich, Zürich, Switzerland, 4Department of Radiation Oncology, MGH, Boston, MA, United States, 5Department of Physics, Harvard University, Cambridge, MA, United States

Synopsis

Keywords: Low-Field MRI, Breast, Hybrid & Novel System TechnologyMRI guidance in Proton Therapy can improve breast cancer targeting accuracy during treatment planning. This study focuses on RF coil optimization for breast imaging at ultra-low field where proton beam deflection is minimal. Our previous optimization algorithm was further improved to adapt to any breast-shaped coil and any anatomical region. It was also developed for organs-at-risk imaging with a deep view into the chest. This new optimization method was tested for a single-channel conical-shaped coil and validated with imaging. The optimized coil showed a more homogenous B-field compared to its unoptimized evenly spaced wound coil in agreement with the simulations.

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