Patent ID: 8497679
Filing Date: 2013-07-30
Classification: G01R

Abstract:
1. A method to generate a magnetic resonance difference image, comprising the steps of: exciting nuclear spins in an examination subject to cause emission of magnetic resonance signals from the examination subject; phase coding said magnetic resonance signals by activating multiple phase coding gradients respectively in different spatial directions; reading out the phase coded magnetic resonance signals as values respectively entered into k-space at k-space points; for each of said k-space points, implementing said readout by conducting a first readout wherein a first value for that k-space point is entered into k-space, to produce a first k-space data set for said readout, modifying said multiple phase coding gradients to cause the gradient moment for each of said multiple phase coding gradients to zero for a time period from said first readout to a subsequent point in time and, at said subsequent point in time, conducting a second readout of the k-space point, to produce a second set of k-space data for said second readout; and in a computerized processor, generating a magnetic resonance difference image as a difference between said first set of k-space data and said second set of k-space data.