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Abstract #2184

Investigation of MR visibility control of water-based (CaTiO3) dielectric padding with iron oxide contrast agent in 7T human brain MRI

Seulki Yoo1,2, Ji Seong Barg1, Bo-yong Park3,4, and Seung-Kyun Lee1,2
1Department of Biomedical Engineering, Sungkyunkwan university, Suwon, Korea, Republic of, 2Intelligent Precision Healthcare Convergence, Sungkyunkwan University, Suwon, Korea, Republic of, 3Department of Data Science, Inha University, Incheon, Korea, Republic of, 4Center for Neuroscience Imaging Research,Institute for Basic Science, Suwon, Korea, Republic of


Ultra-high-field MRI provides improved signal-to-noise ratio (SNR) and tissue contrast. However, at the same time, it exhibits stronger RF field inhomogeneity compared to lower-field MRI. Although such inhomogeneity can be mitigated by customized RF coils and parallel transmit methodology, it is often difficult to translate these to clinical use. Recently, a simple and low-cost high dielectric-constant padding has been proposed to improve the quality of 7T brain images in many sequences. Here, we propose a novel approach to suppress the MR visibility of a water-based dielectric padding by controlled addition of iron oxide contrast agent in 7T human brain MRI.

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