Anisotropic Gradient Time Delay Correction for Oblique Radial Readouts Used in Ultrashort TE (UTE) Imaging

Atsushi M. Takahashi¹

Gradient delays in MRI system are typically anisotropic and yield artifacts that are especially noticable in ramp sampled, center-out, radial k-space trajectories. We have developed a calibration procedure and a mathematical formulation for correcting artifacts from anisotropic gradient delays.