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Dynamic and inherent B0 correction for DTI using stimulated echo spiral imaging.

Publication ,  Journal Article
Avram, AV; Guidon, A; Truong, T-K; Liu, C; Song, AW
Published in: Magn Reson Med
March 2014

PURPOSE: To present a novel technique for high-resolution stimulated echo diffusion tensor imaging with self-navigated interleaved spirals readout trajectories that can inherently and dynamically correct for image artifacts due to spatial and temporal variations in the static magnetic field (B0) resulting from eddy currents, tissue susceptibilities, subject/physiological motion, and hardware instabilities. METHODS: The Hahn spin echo formed by the first two 90° radiofrequency pulses is balanced to consecutively acquire two additional images with different echo times and generate an inherent field map, while the diffusion-prepared stimulated echo signal remains unaffected. For every diffusion-encoding direction, an intrinsically registered field map is estimated dynamically and used to effectively and inherently correct for off-resonance artifacts in the reconstruction of the corresponding diffusion-weighted image. RESULTS: After correction with the dynamically acquired field maps, local blurring artifacts are specifically removed from individual stimulated echo diffusion-weighted images and the estimated diffusion tensors have significantly improved spatial accuracy and larger fractional anisotropy. CONCLUSION: Combined with the self-navigated interleaved spirals acquisition scheme, our new method provides an integrated high-resolution short-echo time diffusion tensor imaging solution with inherent and dynamic correction for both motion-induced phase errors and off-resonance effects.

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Published In

Magn Reson Med

DOI

EISSN

1522-2594

Publication Date

March 2014

Volume

71

Issue

3

Start / End Page

1044 / 1053

Location

United States

Related Subject Headings

  • White Matter
  • Signal Processing, Computer-Assisted
  • Sensitivity and Specificity
  • Reproducibility of Results
  • Nuclear Medicine & Medical Imaging
  • Image Interpretation, Computer-Assisted
  • Image Enhancement
  • Humans
  • Echo-Planar Imaging
  • Diffusion Tensor Imaging
 

Citation

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Avram, A. V., Guidon, A., Truong, T.-K., Liu, C., & Song, A. W. (2014). Dynamic and inherent B0 correction for DTI using stimulated echo spiral imaging. Magn Reson Med, 71(3), 1044–1053. https://doi.org/10.1002/mrm.24767
Avram, Alexandru V., Arnaud Guidon, Trong-Kha Truong, Chunlei Liu, and Allen W. Song. “Dynamic and inherent B0 correction for DTI using stimulated echo spiral imaging.Magn Reson Med 71, no. 3 (March 2014): 1044–53. https://doi.org/10.1002/mrm.24767.
Avram AV, Guidon A, Truong T-K, Liu C, Song AW. Dynamic and inherent B0 correction for DTI using stimulated echo spiral imaging. Magn Reson Med. 2014 Mar;71(3):1044–53.
Avram, Alexandru V., et al. “Dynamic and inherent B0 correction for DTI using stimulated echo spiral imaging.Magn Reson Med, vol. 71, no. 3, Mar. 2014, pp. 1044–53. Pubmed, doi:10.1002/mrm.24767.
Avram AV, Guidon A, Truong T-K, Liu C, Song AW. Dynamic and inherent B0 correction for DTI using stimulated echo spiral imaging. Magn Reson Med. 2014 Mar;71(3):1044–1053.
Journal cover image

Published In

Magn Reson Med

DOI

EISSN

1522-2594

Publication Date

March 2014

Volume

71

Issue

3

Start / End Page

1044 / 1053

Location

United States

Related Subject Headings

  • White Matter
  • Signal Processing, Computer-Assisted
  • Sensitivity and Specificity
  • Reproducibility of Results
  • Nuclear Medicine & Medical Imaging
  • Image Interpretation, Computer-Assisted
  • Image Enhancement
  • Humans
  • Echo-Planar Imaging
  • Diffusion Tensor Imaging