Abstract #3713
High resolution T1 mapping within seconds: model-based reconstruction without regularization
Volkert Roeloffs 1 , Xiaoqing Wang 1 , Tilman Sumpf 1 , and Jens Frahm 1
1
Biomedizinische NMR Forschungs GmbH, Max
Planck Institute for Biophysical Chemistry, Gttingen,
Niedersachsen, Germany
In this work we present a model-based reconstruction
algorithm for the reconstruction of high resolution T1
maps from a fast spoiler-gradient free radial IR-FLASH
sequence. By using minimal TR and formulating the
problem in the parameter domain, no further
regularization techniques are necessary. The resulting
non-linear optimization problem is solved by the
Gauss-Newton method. A phantom study revealed good
agreement of the T1 values with the gold standard and a
first in vivo experiment using the same parameter set as
in the phantom study proofed the proposed technique to
be robust.
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