Adaptive motion correction of single-voxel spectroscopy with real-time frequency correction at 3 T and 7 T
Christian Labadie 1 , Thomas Siegert 1 , Enrico Reimer 1 , Maria Guidi 1 , Miguel Martinez-Maestro 1 , Harald E. Mller 1 , Robert Turner 1 , and Jessica Schulz 1
Max Planck Institute for Human Cognitive and
Brain Sciences, Leipzig, Germany
The coherent accumulation of PRESS scans suffers from
head motion and frequency drift. We present an adaptive
approach consisting of fetching the current position of
the head before each scan using an embedded set of three
cameras placed near the head coil, and determining the
frequency from the transverse magnetization of the water
protons after the first frequency selective 90
saturation pulse of the WET water suppression scheme.
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