Abstract #0663
Improved angular resolution at low b-values in Diffusion Spectrum Imaging through Radial acquisition in q-space
Steven Baete 1,2 and Fernando Emilio Boada 1,2
1
Center for Biomedical Imaging, Dept. of
Radiology, NYU Langone Medical Center, New York, New
York, United States,
2
CAI2R,
Center for Advanced Imaging Innovation and Research, NYU
Langone Medical Center, New York, New York, United
States
In the conventional rectangular sampling of q-space in
Diffusion Spectrum Imaging, the angular resolution
attainable is proportional to the number of shells and
the highest b-value acquired. Hence, increasing angular
resolution results in acquiring more samples and
increasing acquisition time. In this abstract, the
angular resolution of the recently proposed radial
q-space sampling is shown to be independent of the
number of shells acquired above a certain threshold.
This results in improved DSI reconstructions at a lower
number of shells and at shorter acquisition times, as
illustrated by in vivo brain data and computer
simulations.
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