Yong Pang1, Xiaoliang Zhang2,3
1Radiology and Biomedical imaging,
University of California San Francisco, San Francisco, CA , United States; 2Radiology
and Biomedical imaging, University of California San Francisco, San
Francisco, CA, United States; 3UCSF/UC Berkeley Joint Graduate
Group in Bioengineering, San Francisco & Berkeley, CA, United States
Multi-dimensional
spatial selective excitation and parallel transmission have been applied to
single- and multi-voxel MR spectroscopy to excite arbitrarily shaped region
and shorten the pulse width. Recently the sparse pulse has been developed to
shorten the excitation duration by using significantly undersampled k-space.
Taking the advantage of this new technique, an example of multi-voxel
excitation using sparse pulse is presented. Bloch simulation results
demonstrate that each voxel can be well localized within the Field of View
and the in-slice error can be controlled within 5%.