Abstract #4402
Calculating G-factor Maps from PROPELLER SENSE Reconstruction
Yuchou Chang 1 , James G. Pipe 1 , and Michael Schr 1,2
1
Neuroimaging Research, Barrow Neurological
Institute, Phoenix, Arizona, United States,
2
Philips
Healthcare, Cleveland, Ohio, United States
In Cartesian SENSE parallel imaging the g-factor
measures the noise propagation due to ill-conditioning
of the matrix inversion during the reconstruction. To
the best of our knowledge, the g-factor of SENSE images
acquired with the PROPELLER method has never been
studied. In this abstract, we propose a method to
directly calculate g-factor map for SENSE reconstruction
with PROPELLER trajectories and compare it to a
Monte-Carlo simulation. In comparison with Cartesian
imaging, experimental results demonstrate that the
proposed method provides a useful tool for identifying
noise behavior in PROPELLER SENSE and is computationally
feasible in practice.
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