Sentence examples for susceptibility distortion from inspiring English sources

Averages of two sets of diffusion-weighted images with phase-encoding directions of opposite polarity (left – right) were acquired to correct for susceptibility distortion [50].

Diffusion MR data were first corrected for eddy-current distortion and for susceptibility distortion following the method of Andersson et al. [50] using Matlab (Matlab7, Mathworks) codes incorporated in SPM5 (http://www.fil.ion.ucl.ac.uk/spm/).ac.uk/spm/

After this transformation, there was no discernable mismatch between our susceptibility distortion-corrected diffusion MR data and its corresponding T1-weighted image.

The RESOLVE sequence allows minimization of susceptibility distortions and T2* blurring.

Manual registration was used to maximize anatomic agreement along the medial wall and because echo planar imaging susceptibility distortions in DTI can confound global registration procedures.

In addition, reversed phase-encode blip images will also be collected to correct for susceptibility distortions in the spin-echo DWI images [ 76].

A single non-diffusion weighted (b-value = 0 s/mm) volume with reversed PE was combined with the non-reversed dMRI data to estimate an off-resonance field, which is then applied to correct susceptibility distortions [ 75].

All imaging studies were performed on an Allegra 3T head-dedicated system (Siemens, Ehrlangen, Germany) with a gradient strength of 40 mT/m and slew rate of 400~900 mT/m/s, allowing EPI acquisitions with minimal susceptibility distortions.

DTI was based on a dual spin-echo echo-planar imaging (EPI) sequence supplemented with parallel imaging acceleration (GRAPPA) (Griswold et al., 2002) with a factor 2 to reduce susceptibility distortions.

This can clearly be improved upon at higher field strengths but at the expense of more severe susceptibility distortions which need to be circumvented at the acquisition level or corrected for in post-processing.

DWI images were 1) corrected for possible susceptibility distortions by applying a field distortion map computed based on the 2 in opposite k-space readouts acquired b = 0 images (Andersson et al. 2003); 2) corrected for eddy-current distortions (Andersson and Skare 2002); and 3) realigned to the b = 0 image.