Patent ID: 8314614

Claim:
A device for MRI of a body placed in an examination volume, the device comprising: main magnet coils configured for establishing a substantially homogeneous main magnetic field in the examination volume; gradient coils configured for generating switched magnetic field gradients superimposed upon the main magnetic field in the examination volume; an RF transmit antenna configured for radiating RF pulses towards the body; a control system configured for controlling the generation of the magnetic field gradients and the RF pulses; a demodulator configured for receiving and sampling MR signals; and one or more processors configured to: a) generate a series of MR signals by subjecting at least a portion of the body to an MRI sequence of at least one RF pulse and switched magnetic field gradients, b) acquire the MR signals as a plurality of k-space blades according to the PROPELLER scheme, the k-space blades being rotated about a center of k-space, c) compute phase errors from the phase differences of pairs of k-space blades having exactly or nearly opposed rotation angles, d) perform a phase correction of the acquired k-space blades on the basis of the computed phase errors to generate an acquired and phase-corrected MR data set, and e) reconstruct an MR image from the acquired and phase-corrected MR data set.