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Abstract #2994

Probabilistic Fiber Tracking at UHF: Effects of Distortion Correction and Reverse Phase Polarity Combination.

Oleg P Posnansky 1 , Myung-Ho In 1 , and Oliver Speck 1

1 Institute of Experimental Physics, Department of Biomedical Magnetic Resonance, Otto-von-Guericke University, Magdeburg, Germany

In this study, an analysis of probabilistic fiber tracking was performed using extended point spread function mapping to demonstrate that accurate distortion correction and combination of echo-planar images with opposite phase-encoding polarity is important to optimally preserve spatial information. Reverse gradient polarity methods suggested previously were also applied for comparison. The results demonstrate that the probabilistic connectivity density can be improved by these corrections. Therefore, optimally preserving spatial information from the image pair can refine the structural connectivity data.

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