Abstract #0616
Reduced Blurring in 3D Fast Spin Echo through Joint Temporal ESPIRiT Reconstruction
Jonathan I. Tamir 1 , Peng Lai 2 , Martin Uecker 1 , and Michael Lustig 1
1
Electrical Engineering and Computer
Sciences, University of California, Berkeley, Berkeley,
CA, United States,
2
Global
Applied Science Laboratory, GE Healthcare, Menlo Park,
CA, United States
Volumetric Fast Spin Echo (FSE) is an attractive
alternative to 2D FSE as it provides isotropic
resolution. Because 3D FSE employs long echo trains to
reduce scan time, the resulting image suffers from
blurring due to T2 decay. In this work, we model the
temporal behavior of the acquisition to reconstruct a
full time series of images. In addition to exploiting
parallel imaging and spatial sparsity, we constrain the
temporal decay to a low-dimensional subspace. We show
that randomizing the echo train ordering in tandem with
this temporal model can produce a multi-contrast time
series of images with reduced blurring.
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