Single-spoke binning: Reducing motion artifacts in abdominal radial stack-of-stars imaging.

ABSTRACT:

Purpose

To increase the effectiveness of respiratory gating in radial stack-of-stars MRI, particularly when imaging at high spatial resolutions or with multiple echoes.

Methods

Free induction decay (FID) navigators were integrated into a three-dimensional gradient echo radial stack-of-stars pulse sequence. These navigators provided a motion signal with a high temporal resolution, which allowed single-spoke binning (SSB): each spoke at each phase encode step was sorted individually to the corresponding motion state of the respiratory signal. SSB was compared with spoke-angle binning (SAB), in which all phase encode steps of one projection angle were sorted without the use of additional navigator data. To illustrate the benefit of SSB over SAB, images of a motion phantom and o

SUBMITTER: Maatman IT 

PROVIDER: S-EPMC11955222 | biostudies-literature | 2023 May

REPOSITORIES: biostudies-literature