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Abstract #2973

Comparison of Magnetic Field Correlation in Brain at 1.5 and 3 Tesla

Caixia Hu1,2, Jens H. Jensen1, Casian Monaco, Kathleen Williams, Joseph A. Helpern1,2

1Radiology, New York University School of Medicine, New York, NY, United States; 2Center for Advanced Brain Imaging, Nathan S. Kline Institute, Orangeburg, NY, United States

The magnetic field correlation is theoretically predicted to scale as the square of the applied field. This was verified experimentally in brain for two subjects by scanning them at 1.5T and 3T. The magnetic field correlation was estimated by using a recently proposed MRI method based on asymmetric spin echoes. The consistency of the experimental results with the theoretical prediction constitutes an important validation for the imaging method and helps to justify its application at clinical field levels. Magnetic field correlation can be of interest for studying brain iron changes associated with neuropathologies, such as Alzheimers disease and multiple sclerosis.