Correction of artifacts caused by maxwell terms in slice offset echo planar imaging
 Two methods are disclosed to remove the image artifacts produced by Maxwell terms arising from the imaging gradients in an echo planar imaging pulse sequence. In the first method, the frequency and phase errors caused by the Maxwell terms are calculated on an individual slice basis and subsequently compensated during data acquisition by dynamically adjusting the receiver frequency and phase. In the second method, two linear phase errors, one in the readout direction and the other in the phase-encoding direction, both of which arise from the Maxwell terms, are calculated on an individual-slice basis. These errors are compensated for in the k-space data after data acquisition. 
General Electric Company
G G
G01R G01R
inventional inventional
Yiping Matthew A. Jason A. Xiaohong Hammond G. Joseph K.
Du Bernstein Polzin Zhou Reynolds Maier