B $_{\textrm{0}}$ mapping using rewinding trajectories (BMART): B $_{\textrm{0}}$ Mapping Using Rewinding Trajectories (BMART). Baron, C. A. & Nishimura, D. G. Magnetic Resonance in Medicine, 78(2):664–669, August, 2017.
Paper doi abstract bibtex Purpose: To create a B0 map and correct for off-resonance with minimal scan time increase for two-dimensional (2D) or 3D non-Cartesian acquisitions. Methods: Rewinding trajectories that bring the zeroth gradient moment to zero every repetition time (TR) were used to estimate the off-resonance with a center-out 3D cones trajectory, which required an increase in the minimum TR by 5%. The off-resonance estimation and correction was implemented using an algorithm based on binning and object-domain phase correction. B0 maps using BMART (B0 mapping using rewinding trajectories) were compared to maps obtained using separate scans with multiple echo time (TE) in a phantom and human brain. Results: Excellent agreement between BMART and the multiple-TE method were observed, and images corrected with BMART were deblurred. Conclusion: BMART can correct for off-resonance without requiring an additional scan, and can be easily applied to center-out or projection trajectories (2D or 3D). Magn Reson Med 000:000–000, 2016. VC 2016 International Society for Magnetic Resonance in Medicine
@article{baron_b_2017,
title = {B $_{\textrm{0}}$ mapping using rewinding trajectories ({BMART}): {B} $_{\textrm{0}}$ {Mapping} {Using} {Rewinding} {Trajectories} ({BMART})},
volume = {78},
issn = {07403194},
shorttitle = {B $_{\textrm{0}}$ mapping using rewinding trajectories ({BMART})},
url = {http://doi.wiley.com/10.1002/mrm.26391},
doi = {10.1002/mrm.26391},
abstract = {Purpose: To create a B0 map and correct for off-resonance with minimal scan time increase for two-dimensional (2D) or 3D non-Cartesian acquisitions.
Methods: Rewinding trajectories that bring the zeroth gradient moment to zero every repetition time (TR) were used to estimate the off-resonance with a center-out 3D cones trajectory, which required an increase in the minimum TR by 5\%. The off-resonance estimation and correction was implemented using an algorithm based on binning and object-domain phase correction. B0 maps using BMART (B0 mapping using rewinding trajectories) were compared to maps obtained using separate scans with multiple echo time (TE) in a phantom and human brain.
Results: Excellent agreement between BMART and the multiple-TE method were observed, and images corrected with BMART were deblurred.
Conclusion: BMART can correct for off-resonance without requiring an additional scan, and can be easily applied to center-out or projection trajectories (2D or 3D). Magn Reson Med 000:000–000, 2016. VC 2016 International Society for Magnetic Resonance in Medicine},
language = {en},
number = {2},
urldate = {2021-02-12},
journal = {Magnetic Resonance in Medicine},
author = {Baron, Corey A. and Nishimura, Dwight G.},
month = aug,
year = {2017},
pages = {664--669},
}
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