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. Author manuscript; available in PMC: 2017 Jun 1.
Published in final edited form as: Neurocrit Care. 2016 Jun;24(3):342–352. doi: 10.1007/s12028-015-0216-8

Figure 3. Fractional Anisotropy Correlations with Apparent Diffusion Coefficient, Axial Diffusivity, and Radial Diffusivity.

Figure 3

Scatter plots and linear regression lines are displayed for all diffusion tensor imaging lesional measurements during both the acute and subacute stages of traumatic axonal injury (TAI). Individual data points are shown for each lesion at each time point, and regression lines are shown with 95% confidence intervals (dotted lines). Fractional anisotropy (FA) correlates strongly with radial diffusivity (RD), moderately with apparently diffusion coefficient (ADC), and not with axial diffusivity (AD). The strong correlation between FA and RD suggests that longitudinal changes in RD play a primary role in driving changes in FA within TAI lesions.