Ultra High-Field (7T) MRI

The sensitivity of the MRI scales approximately linearly with the strength of the main magnetic field and therefore there is a continuous drive towards developing MRI systems with stronger magnetic fields. The current standard for clinical MRI scanners is 1.5T or 3T. The R.M. Lucas Center for Imaging at Stanford University houses a 7T human MRI scanner (one of only ~50 such scanners in the world). This ultra high field MRI scanner provides dramatically improved sensitivity, contrast and spectral dispersion.

We are interested in developing MRI pulse sequences that mitigate artifacts related to the larger radio-frequency wavelength and decreased homogeneity of the main magnetic field at 7T and leveraging the improved sensitivity and contrast for ultra-high resolution structural imaging and functional connectivity measurements.

Effects of Motion on Coupling of Coil Elements and Parallel Imaging Reconstruction at 3T and 7T.

 Tian Q, Gong E, Leuze C, Pauly J, McNab JA.

International Society for Magnetic Resonance in Medicine Annual Scientific Meeting: Toronto, Canada, June 2015.

 

A Crusher Gradient Scheme for Stimulated Echo Double Wave Vector Diffusion Imaging for 7T Human MRI.

Yang G, Leuze C, McNab JA.

International Society for Magnetic Resonance in Medicine Annual Scientific Meeting: Toronto, Canada, June 2015.

 

Analysis of Hemorrhagic Traumatic Axonal Injury Lesions Using Seed-Based Resting-State FMRI at 7T.

Lee S, Polimeni JR, Witzel T, Price CM, Greicius MD, Edlow BL, McNab JA.

.International Society for Magnetic Resonance in Medicine Annual Scientific Meeting: Toronto, Canada, June 2015.