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<b><u>MGH Imaging Center Seminar Announcement</u></b><br>
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<p class="x_MsoNormal"><b><span lang="EN-CA">On:<u> Monday February 24th </u> from 12:30 to 1:30pm at : Montreal General Hospital L7-140</span></b></p>
<p class="x_MsoNormal"><b>Our Invited speaker is:</b></p>
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<p class="x_MsoNormal"><b>Dr. Hoby Hetherington</b></p>
<p class="x_MsoNormal"><b>Professor of Radiology</b></p>
<p class="x_MsoNormal"><b>University of Pittsburg<i></i></b></p>
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<p class="x_MsoNormal"><b><u><span lang="EN-CA">Title:</span></u></b><span lang="EN-CA"> “<b><i>An integrated solution for B0 and B1 inhomogeneities at 7T: Applications for MRSI, Anatomical and Functional Imaging”</i></b></span></p>
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<p class="x_MsoNormal"><b><span lang="EN-CA">Abstract: </span></b></p>
<p class="x_MsoNormal">Although 7T offers enhanced SNR, contrast and resolution for both imaging and spectroscopy, realizing these enhancements requires overcoming hurdles associated with B<sub>1</sub> and B<sub>0</sub> inhomogeneity. At 7T rf-tissue interactions
and limitations in available RF amplifier power result in increased inhomogeneity and low peak B<sub>1</sub> values. This manifests as unwanted intensity variations and chemical shift dispersion errors. The linear increase in B<sub>0</sub>inhomogeneity 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 B<sub>0 </sub>and B<sub>1</sub> 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.</p>
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