Demonstration of full tensor current density imaging using ultra-low field MRI.
Magnetic Resonance Imaging(2019)
摘要
Direct imaging of impressed dc currents inside the head can provide valuable conductivity information, possibly improving electro-magnetic neuroimaging. Ultra-low field magnetic resonance imaging (ULF MRI) at μT Larmor fields can be utilized for current density imaging (CDI). Here, a measurable impact of the magnetic field BJ, generated by the impressed current density J, on the MR signal is probed using specialized sequences. In contrast to high-field MRI, the full tensor of BJ can be derived without rotation of the subject in the scanner, due to a larger flexibility in the sequence design.
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关键词
Current density imaging,Ultra-low field MRI,Zero-field encoding
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