Correction of B₀ and linear eddy currents: Impact on morphological and quantitative ultrashort echo time double echo steady state (UTE-DESS) imaging.

ABSTRACT: The purpose of the current study was to investigate the effects of B₀ and linear eddy currents on ultrashort echo time double echo steady state (UTE-DESS) imaging and to determine whether eddy current correction (ECC) effectively resolves imaging artifacts caused by eddy currents. 3D UTE-DESS sequences based on either projection radial or spiral cones trajectories were implemented on a 3-T clinical MR scanner. An off-isocentered thin-slice excitation approach was used to measure eddy currents. The measurements were repeated four times using two sets of tested gradient waveforms with opposite polarities and two different slice locations to measure B₀ and linear eddy currents simultaneously. Computer simulation was performed to investigate the eddy current effect. Final

SUBMITTER: Jang H 

PROVIDER: S-EPMC10518369 | biostudies-literature | 2023 Mar

REPOSITORIES: biostudies-literature