Abstract #3274
Multipole anisotropy measured by STI in the p-space is not an artifact of zero filling
Chunlei Liu 1,2
1
Brain Imaging and Analysis Center, Duke
University, Durham, NC, United States,
2
Radiology,
Duke University, Durham, NC, United States
Multipole anisotropy can be measured by STI in the
Fourier spectral space. The Fourier spectral space, or
p-space, can be generated by applying gradients or
equivalently by shifting k-space data in various
directions. Shifting k-pace, however, creates regions
without data support that have to be zero filled.
Concerns were raised that multipole anisotropy maybe an
artifact of zero filling. Here, we demonstrated that
this anisotropy is not caused by zero filling using
mouse brain experiments. Our data support that p-space
STI may enable practical mapping of tissue
microstructure in vivo without rotating subject or
magnetic field.
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