Ulrich Katscher1, Jürgen Rahmer1, Christian Stehning1, Peter Vernickel1, and Bernhard Gleich1
MRI-based
“Electric Properties Tomography” (MRI-EPT) determines electric conductivity
measuring and post-processing the spatial distribution of the TX RF field. Obtained
conductivity corresponds to Larmor frequency, reflecting biochemical content of
tissue, but not its specific cellular structure. Cellular tissue structure is
reflected by conductivity at low frequency (LF, 100-500 kHz), as used for
“Magnetic Particle Imaging” (MPI). Similar to MRI, MPI is able to determine
the spatial distribution of applied LF field, and thus, a reconstruction of LF
conductivity should be possible (“MPI-EPT”) in analogy to MRI-EPT. This study
investigated the principle feasibility of MPI-EPT and compared results with
MRI-EPT.