ACCELERATED T2-MAPPING IN MRI THROUGH UNDERSAMPLING AND K-T RECONSTRUCTION

摘要

The invention relates to a device for MR imaging of a body (7) placed in an examination volume. The device (1) is arranged to:a) generate a series of MR echo signals for multiple echo time values (TE1, TE2, TE3, TE4) by subjecting at least a portion of said body (7) to an MR imaging sequence of at least one RF pulse and switched magnetic field gradients, b) acquire MR signal data from a set of k- space positions with sub-sampling in the phase-encoding direction, c) estimate MR signal data for skipped k-space positions by combining MR signal data from acquired k-space positions, so as to complete the MR signal data set, d) reconstruct an MR image for each echo time value (TE1, TE2, TE3, TE4) from the completed MR signal data set, and e) compute a relaxation time map from the set of reconstructed MR images.