Abstract #4462
Comparison of extended Point Spread Function and Reverse Gradient Polarity distortion corrections in quantification of DW EPI at UHF
Oleg Posnansky 1 , Myung-Ho In 1 , and Oliver Speck 1
1
Department of Biomedical Magnetic Resonance,
Institute of Experimental Physics, Otto-von-Guericke
University, Magdeburg, Germany
In this study, we compare fractional anisotropy (FA)
maps and DT (diffusion tensor) fiber tracks built after
application of extended PSF, and Reverse Gradient
Polarity distortion correction methods. The results
demonstrate that the extended PSF method is very
efficient for the correction of distortions in both
DW-EPI data with opposite PE polarity, and thus it
unveils properly positioned and fully recovered fine
anatomical structures in the brain FA maps and fiber
tracks. Due to its high accuracy extended PSF provides
overwhelming correspondence between anatomy and
connectivity of the tissue.
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