Borjan Aleksandar Gagoski1, Kawin Setsompop2, Joonsung Lee1, Vijay Alagappan2, Michael Hamm3, Axel vom Endt3, Lawrennce Wald4,5, Elfar Adalsteinsson5,6
1Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, MA, USA; 2A. A. Martinos Center for Biomedical Imaging, MGH, Charlestown, MA, USA; 3Siemens Medical Solutions, Charlestown, MA, USA; 4A. A. Martinos Center for Biomedical Imaging, Department of Radiology, MGH, Charlestown, MA, USA; 5Harvard-MIT Division of Health Sciences and Technology, Cambridge, MA, USA; 6Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge,, MA, USA
pTx mitigation excitation over a 600Hz spectral bandwidth and a 3 cm thick slab, preceded by pTx Gaussian-shaped pulses for water suppression was used in a chemical shift imaging acquisitions. The goal of this work is to demonstrate that compared to the regular birdcage (BC) mode excitation, the proposed pTx wideband excitation provides spatial uniformity of metabolite signals in a spectroscopy phantom containing physiological brain metabolite concentrations.