Name
Title | ||
|---|---|---|
Imaging with referenceless distortion correction and flexible regions of interest using single-shot biaxial spatiotemporally encoded MRI. |
Abstract | ||
|---|---|---|
Owing to its intrinsic characteristics, spatiotemporally encoded (SPEN) imaging is less sensitive to adverse effects due to field inhomogeneity in comparison with echo planar imaging, a feature highly desired for functional, diffusion, and real-time MRI. However, the quality of images obtained with SPEN MRI is still degraded by geometric distortions when field inhomogeneity exists. In this study, a single-shot biaxial SPEN (bi-SPEN) pulse sequence is implemented, utilizing a 90° and a 180° chirp pulse incorporated with two orthogonal gradients. A referenceless geometric-distortion correction based on the single-shot bi-SPEN sequence is then proposed. The distorted image acquired with the single-shot bi-SPEN sequence is corrected by iterative super-resolved reconstruction involving the field gradients estimated from a field map, which in turn is obtained from its own super-resolved data after a phase-unwrapping procedure without additional scans. In addition, the distortion correction method is applied to improve the quality of the multiple region-of-interest images obtained with single-shot bi-SPEN sequence. |
Year | DOI | Venue |
|---|---|---|
2015 | 10.1016/j.neuroimage.2014.10.041 | NeuroImage |
Keywords | DocType | Volume |
bi-SPEN,ROI,FOV,EPI,SPEN,SNR,TE,RASER | Journal | 105 |
ISSN | Citations | PageRank |
1053-8119 | 0 | 0.34 |
References | Authors | |
0 | 6 | |
Name | Order | Citations | PageRank |
|---|---|---|---|
| Jing Li | 1 | 0 | 0.34 |
| Lin Chen | 2 | 0 | 0.68 |
| Shuhui Cai | 3 | 14 | 6.10 |
| Congbo Cai | 4 | 10 | 5.90 |
| Jianhui Zhong | 5 | 0 | 0.34 |
| Zhong Chen | 6 | 0 | 0.68 |