Purpose Fast MRI acquisitions often rely on efficient traversal of k‐space and hardware
limitations, or other physical effects can cause the k‐space trajectory to deviate from a …

Increased spatiotemporal resolution in MRI can be achieved by the use of parallel
acquisition strategies, which simultaneously sample reduced k‐space data using the …

The k‐space readout of propeller‐type sequences may be accelerated by the use of parallel
imaging (PI). For PROPELLER, the main benefits are reduced blurring due to T2 decay and …

In interleaved spiral MRI, an object's Fourier transform is sampled along a set of curved
trajectories in the spatial frequency domain (k‐space). An image of the object is then …

Abstract The CAIPIRINHA (Controlled Aliasing In Parallel Imaging Results IN Higher
Acceleration) concept in parallel imaging has recently been introduced, which modifies the …

The conventional spiral‐in/out trajectory samples k‐space sufficiently in the spiral‐in path
and sufficiently in the spiral‐out path to enable creation of separate images. We propose an …

The k‐space trajectory of a spiral imaging sequence was measured with a self‐encoding
technique. The image quality improved dramatically when reconstructed with the measured …

The purpose of this study was to combine a recently introduced spatiotemporal parallel
imaging technique, PEAK‐GRAPPA (parallel MRI with extended and averaged generalized …

Purpose To estimate k‐space trajectory errors in non‐Cartesian acquisitions and reconstruct
distortion‐free images, without trajectory measurements or gradient calibrations. Theory and …

Fast imaging trajectories are used in MRI to speed up the acquisition process, but
imperfections in the gradient system create artifacts in the reconstructed images. Artifacts …