This subproject is one of many research subprojects utilizing the resources provided by a Center grant funded by NIH/NCRR. Primary support for the subproject and the subproject's principal investigator may have been provided by other sources, including other NIH sources. The Total Cost listed for the subproject likely represents the estimated amount of Center infrastructure utilized by the subproject, not direct funding provided by the NCRR grant to the subproject or subproject staff. Although signal in SSFP-DWI is composed of both spin echo and multiple stimulated echoes, experiments have shown that motion induced artifacts in SSFP-DWI can still be reduced by correcting navigated phase errors or averaging multiple DWI scans. In this work, we will present a SSFP 3D rotating spiral (3DRS) method for fast DWI and diffusion tensor imaging (DTI) acquisition, which is based on our previously reported 3D-SNAILS technique [1]. By combining SSFP-DWI and 3DRS readouts in this approach, high quality diffusion weighted volumes can be rapidly acquired with very high SNR efficiency and low sensitivity to motion artifacts. One key result of the proposed auto-calibrated kSPA algorithm is that the reconstruction kernel can be computed using calibration data acquired at any location. To accomplish that we only need to translate the surrounding sampling points to center at a set of grid points in the middle of the calibration region. We then repeat the reconstruction for each coil to form the final image similar to the GRAPPA algorithm.

Agency
National Institute of Health (NIH)
Institute
National Center for Research Resources (NCRR)
Type
Biotechnology Resource Grants (P41)
Project #
5P41RR009784-17
Application #
8362916
Study Section
Special Emphasis Panel (ZRG1-SBIB-U (40))
Project Start
2011-04-01
Project End
2012-03-31
Budget Start
2011-04-01
Budget End
2012-03-31
Support Year
17
Fiscal Year
2011
Total Cost
$19,531
Indirect Cost
Name
Stanford University
Department
Radiation-Diagnostic/Oncology
Type
Schools of Medicine
DUNS #
009214214
City
Stanford
State
CA
Country
United States
Zip Code
94305
Taviani, Valentina; Alley, Marcus T; Banerjee, Suchandrima et al. (2017) High-resolution diffusion-weighted imaging of the breast with multiband 2D radiofrequency pulses and a generalized parallel imaging reconstruction. Magn Reson Med 77:209-220
Guo, Jia; Holdsworth, Samantha J; Fan, Audrey P et al. (2017) Comparing accuracy and reproducibility of sequential and Hadamard-encoded multidelay pseudocontinuous arterial spin labeling for measuring cerebral blood flow and arterial transit time in healthy subjects: A simulation and in vivo study. J Magn Reson Imaging :
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Ong, Frank; Lustig, Michael (2016) Beyond Low Rank + Sparse: Multi-scale Low Rank Matrix Decomposition. IEEE J Sel Top Signal Process 10:672-687

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