B1-Mapping for 3T Body Imaging
Zhai Z, DeMeester G, Morich M, Foxall D, Duraj J
Philips Medical Systems
Increased image intensity non-uniformity is a main concern for clinical 3T body imaging when compared with conventional 1.5T results. The cause is poor B1-field uniformity due to electro-dynamic effects. Knowledge of the B1-field spatial distribution inside a patient provides useful data to correct the problem and can lead to improved image quality. Here we present the results of B1-field calculation made using the FDTD method for a loaded 3T quadrature body coil, and compare these with B1-mapping in a volunteer.