Xiaotong Zhang1, Pierre-Francois Van de Moortele2, Sebastian Schmitter2, Bin He1
1Department of Biomedical Engineering, University of Minnesota, Minneapolis, MN, USA; 2Center for Magnetic Resonance Research, University of Minnesota, Minneapolis, MN, USA
The electrical properties (EPs, conductivity and permittivity) of brain tissues provide important information for basic brain research and clinical diagnosis of neurological disorders. They also play an important role in SAR calculation. In this study, using a 16-channel transceiver array coil at 7T and based on existing B1-mapping technique, we have developed a novel method to estimate both magnitude and absolute phase distribution of transmit/receive B1 fields, and the electrical conductivity and relative permittivity values. We report our pilot results in a human brain for electrical property imaging using a high field MRI system.