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AJNR - American Journal of Neuroradiology

Published ahead of print on April 24, 2008
doi: 10.3174/ajnr.A1097

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Evidence of Rapid Ongoing Brain Development Beyond 2 Years of Age Detected by Fiber Tracking

X.-Q. Ding^a,b, Y. Sun^a, H. Braaß^a, T. Illies^a, H. Zeumer^a, H. Lanfermann^b and J. Fiehler^a

^a Department of Neuroradiology, University Medical Center Hamburg-Eppendorf, University of Hamburg, Hamburg, Germany
^b Institute of Diagnostic and Interventional Neuroradiology, Hannover Medical School, Hannover, Germany

View larger version (74K): [in this window] [in a new window]   Fig 1. A, T2 map (anterior is at the top) at the horizontal level of the striatum containing the gCC and sCC, derived from a triple-echo sequence. B, Corresponding FA map. The rectangles are the regions of interest. C, The anatomic structure of the CC displayed in an MPRAGE image. D, The volume of the CC obtained with software InsightSNAPS. E, Fiber of the CC obtained by fiber tracking with DTIStudio software.

View larger version (20K): [in this window] [in a new window]   Fig 2. Numeric values and the corresponding curve fits of the T2 and FA values obtained at the regions of interest of the gCC and the sCC, respectively, where the filled signs represent the values of the male subjects and the open signs, the female subjects. The blue and the red solid lines are the corresponding fit results for male and female subjects.

View larger version (10K): [in this window] [in a new window]   Fig 3. Numeric values and the corresponding curve fits of the fiber number, volume, and fiber attenuation of the CC, where the filled signs represent the values of the male subjects and the open signs, female subjects. The blue and the red solid lines are the corresponding fit results for male and female subjects.