NDLI: Dynamic and inherent $B_{0}$correction for DTI using stimulated echo spiral imaging

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Dynamic and inherent $B_{0}$correction for DTI using stimulated echo spiral imaging

Content Provider	Scilit
Author	Avram, Alexandru V. Guidon, Arnaud Truong, Trong-Kha Liu, Chunlei Song, Allen W.
Copyright Year	2013
Description	Journal: Magnetic Resonance in Medicine 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. 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. 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. 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.
Related Links	https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3760972/pdf
Ending Page	1053
Page Count	10
Starting Page	1044
e-ISSN	15222594
DOI	10.1002/mrm.24767
Journal	Magnetic Resonance in Medicine
Issue Number	3
Volume Number	71
Language	English
Publisher	Wiley-Blackwell
Publisher Date	2013-04-29
Access Restriction	Open
Subject Keyword	Journal: Magnetic Resonance in Medicine Radiology, Nuclear Medicine and Imaging Dti - Diffusion Tensor Imaging Ste - Stimulated Echo Off-resonance Correction Eddy Current Correction Magnetic Field Inhomogeneities
Content Type	Text
Resource Type	Article

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