Mostafa Berangi1,2, Andre Kuehne1, and Thoralf Niendorf1,2
1MRI.TOOLS GmbH, Berlin, Germany, 2Berlin Ultrahigh Field Facility (B.U.F.F.), Max Delbrück Center for Molecular Medicine in the Helmholtz Association, Berlin, Germany
1MRI.TOOLS GmbH, Berlin, Germany, 2Berlin Ultrahigh Field Facility (B.U.F.F.), Max Delbrück Center for Molecular Medicine in the Helmholtz Association, Berlin, Germany
An RF transceiver
array along with dedicated B1 shimming based on a genetic-algorithm
to facilitate 7T MRI aided monitoring of bio-degradable metallic implants is
designed and evaluated in phantom experiments and benchmarked with the
simulations.
Figure 1;
A-C) computer-aided designs (CAD) of the RF transceiver representing sections
of the RF array with the position of the phantom and implant inside the phantom.
D) manufactured RF transceiver, phantom and power dividers.
Figure 4;
Simulation results of coronal unaveraged specific absorption rate (SAR) maps of
a plane through the center of the implant using degenerate birdcage mode (CP), orthogonal
projection (OP) and genetic algorithm-based (GA) shimming.
