Removal of partial Fourier-induced Gibbs (RPG) ringing artifacts in MRI.

ABSTRACT:

Purpose

To investigate and remove Gibbs-ringing artifacts caused by partial Fourier (PF) acquisition and zero filling interpolation in MRI data.

Theory and methods

Gibbs ringing of fully sampled data, leading to oscillations around tissue boundaries, is caused by the symmetric truncation of k-space. Such ringing can be removed by conventional methods, with the local subvoxel shifts method being the state-of-the-art. However, the asymmetric truncation of k-space in routinely used PF acquisitions leads to additional ringings of wider intervals in the PF sampling dimension that cannot be corrected solely based on magnitude images reconstructed via zero filling. Here, we develop a pipeline for the Removal of PF-induced Gibbs ringing (RPG) to remove ringing patterns of different

SUBMITTER: Lee HH 

PROVIDER: S-EPMC9212190 | biostudies-literature | 2021 Nov

REPOSITORIES: biostudies-literature