Patent ID: 7218110
Filing Date: 2007-05-15
Classification: G01R

Abstract:
1. A method for diffusion magnetic resonance imaging (DMRI) comprising: acquiring diffusion weighting (DW) prescan projection data of an examination object using a first sequence, said first sequence including a plurality of interleaved DW segments and a projection acquisition segment wherein the DW segments further includes DW gradient pulses having at least one of a plurality of directions and a plurality of magnitudes; acquiring reference prescan projection data using the first sequence with the DW gradient pulses turned off; comparing the DW prescan projection data and the reference prescan projection data to determine eddy current parameters that characterize the effects of the eddy currents induced by the DW gradient pulses; forming a second sequence by adjusting the first sequence based on the eddy current parameters and including an image acquisition segment in the second sequence, wherein the second sequence includes the plurality of interleaved DW segments having the at least one of a plurality of directions and a plurality of magnitudes and in the same order as the DW segments in the first sequence; acquiring image data of the examination object using the second sequence, and generating an image of the examination object using the acquired image data.