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. High field MRI systems have the potential to enable ultra high spatial resolution imaging, provide enhanced susceptibility contrast and improved chemical species discrimination in spectroscopy. However high field MRI also poses challenges in the form of decreased radio frequency (RF) excitation homogeneity. This manifests as shading artifacts in the images, making quantitative imaging challenging. Recent developments in multi-transmit radiofrequency pulse design offer a possibility of combating this by using multiple parallel transmitters to excite a complex pattern in excitation k-space using RF and gradient pulses in multiple channels that results in a net uniform excitation field across the region of interest. One of the key inputs to such an RF pulse design is the so-called B1 map, a spatial mapping of the excitation field, which is a time consuming step. Accurate but fast B1 mapping is hence key in generating shading-free images at high fields. To read about other projects ongoing at the Lucas Center, please visit http://rsl.stanford.edu/ (Lucas Annual Report and ISMRM 2011 Abstracts)

Agency
National Institute of Health (NIH)
Institute
National Center for Research Resources (NCRR)
Type
Biotechnology Resource Grants (P41)
Project #
5P41RR009784-17
Application #
8362954
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 :
Uecker, Martin; Lustig, Michael (2017) Estimating absolute-phase maps using ESPIRiT and virtual conjugate coils. Magn Reson Med 77:1201-1207
Lai, Lillian M; Cheng, Joseph Y; Alley, Marcus T et al. (2017) Feasibility of ferumoxytol-enhanced neonatal and young infant cardiac MRI without general anesthesia. J Magn Reson Imaging 45:1407-1418
Kogan, Feliks; Hargreaves, Brian A; Gold, Garry E (2017) Volumetric multislice gagCEST imaging of articular cartilage: Optimization and comparison with T1rho. Magn Reson Med 77:1134-1141
Aksoy, Murat; Maclaren, Julian; Bammer, Roland (2017) Prospective motion correction for 3D pseudo-continuous arterial spin labeling using an external optical tracking system. Magn Reson Imaging 39:44-52
Tamir, Jonathan I; Uecker, Martin; Chen, Weitian et al. (2017) T2 shuffling: Sharp, multicontrast, volumetric fast spin-echo imaging. Magn Reson Med 77:180-195
Vos, Sjoerd B; Aksoy, Murat; Han, Zhaoying et al. (2016) Trade-off between angular and spatial resolutions in in vivo fiber tractography. Neuroimage 129:117-132
Suh, Ga-Young; Choi, Gilwoo; Herfkens, Robert J et al. (2016) Three-Dimensional Modeling Analysis of Visceral Arteries and Kidneys during Respiration. Ann Vasc Surg 34:250-60
Ong, Frank; Lustig, Michael (2016) Beyond Low Rank + Sparse: Multi-scale Low Rank Matrix Decomposition. IEEE J Sel Top Signal Process 10:672-687

Showing the most recent 10 out of 445 publications