[BIC-announce] MGH Imaging Center Seminar Announcement: Monday Feb 24th MGH L7-140 12:30 to 1:30

[Reza Farivar-Mohseni, Prof]

MGH Imaging Center Seminar Announcement



On: Monday February 24th   from 12:30 to 1:30pm at : Montreal General Hospital L7-140

Our Invited speaker is:



Dr. Hoby Hetherington

Professor of Radiology

University of Pittsburg





Title: “An integrated solution for B0 and B1 inhomogeneities at 7T: Applications for MRSI, Anatomical and Functional Imaging”



Abstract:

Although 7T offers enhanced SNR, contrast and resolution for both imaging and spectroscopy, realizing these enhancements requires overcoming hurdles associated with B1 and B0 inhomogeneity. At 7T rf-tissue interactions and limitations in available RF amplifier power result in increased inhomogeneity and low peak B1 values. This manifests as unwanted intensity variations and chemical shift dispersion errors. The linear increase in B0inhomogeneity at 7T results in increased spatial distortions for EPI based sequences, bandwidth induced errors in MPRAGE sequences and loss of spectral resolution for MRSI. To overcome these limitations for human brain imaging and spectroscopy we have developed an integrated solution for B0 and B1 inhomogeneity at 7T using a 16 channel transceiver array and RF shimming combined with a very high order shim insert.  These advancements enable rapid multi-slice spectroscopic imaging, low distortion echo planar imaging and minimization of artifacts in anatomical images of the human head.
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