Abstract #2937
Intrinsic Diffusion Sensitivity of the bSSFP Signal: Optimizing the flip angle in the presence of Strong Read Out Gradients
Sbastien Br 1 , Matthias Weigel 2 , Jrgen Hennig 1 , Dominik Von Elverfeldt 1 , and Jochen Leupold 1
1
Department of Radiology, Medical Physics,
University Medical Center, Freiburg, Freiburg, Germany,
2
Radiological
Physics, University of Basel Hospital, Basel,
Switzerland
In application fields of bSSFP, like MR-microscopy or
molecular imaging, strong gradients mostly available at
ultra-high field small animal scanners, are necessary in
order to achieve sub-milimeter image resolutions. Due to
relatively high b-values of these gradients, strong
diffusion effects are induced and particularly read out
gradients lead to a substantial drop of the steady state
signal. In this work, we demonstrate the optimization of
the flip angle in dependency of T
1
, T
2
and
b-value of the readout gradient in a standard bSSFP
sequence.
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