Publications [#268837] of G. Allan Johnson

Papers Published

1. Jiang, Y; Johnson, GA, Microscopic diffusion tensor imaging of the mouse brain., Neuroimage, vol. 50 no. 2 (April, 2010), pp. 465-471, ISSN 1095-9572 [20034583], [doi]
   (last updated on 2025/07/05)

   Abstract:
   Diffusion tensor imaging (DTI) data at 43 mum isotropic resolution has been acquired on the intact adult mouse brain in 28-h scan time by using a streamlined protocol, including specimen fixation and staining, image acquisition, reconstruction, post-processing, and distribution. An intermediate registration of each component image is required to achieve the desired microscopic resolution. Multiple parameters have been derived, including fractional anisotropy, axial and radial diffusivity, and a color-coded orientation map of the primary eigenvector. Each DTI dataset was mapped to a common reference space to facilitate future standardized analysis. Fiber tracking has also been demonstrated, providing 3D connection information. This protocol to acquire high-resolution DTI data in a robust and repeatable fashion will serve as a foundation to quantitatively study mouse brain integrity and white matter architecture, at what we believe to be the highest spatial resolution yet attained.

   Keywords:
   Animals • Anisotropy • Brain • Brain Mapping • Diffusion Tensor Imaging • Image Interpretation, Computer-Assisted • Mice • Staining and Labeling • Tissue Fixation • anatomy & histology* • methods • methods*