Abstract #3303
B 1 -correction of isolated, spillover-corrected CEST-effects at 7 T
Johannes Windschuh 1 , Moritz Zaiss 1 , Jan-Eric Meissner 1 , and Peter Bachert 1
1
Medical Physics in Radiology, German Cancer
Research Center (DFKZ), Heidelberg, Baden-Wrttemberg,
Germany
The
in
vivo
images
of isolated CEST-effects aquired in wholebody scanners
at ultra-high fields usually suffer from a strong
spatial dependence. This is due to the influence of the
rf amplitude (B
1
) on the effects and B
1
inhomogeneities
in the large FOV. It is shown that the acquisition of
three CEST-images at different B
1
-amplitudes
yield homogeneous APT and NOE maps when using the
inverse metric MTR
Rex
for
spillover correction.
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