High-resolution T1-weighted images of the brain were collected on a 3 T head-only Siemens Allegra MRI scanner at the University of Illinois. Images were acquired using a 3D MPRAGE (Magnetization Prepared Rapid Gradient Echo Imaging) protocol in which 144 contiguous axial slices collected in ascending fashion parallel to anterior posterior commissures. Scan parameters were as follows: echo time = 3.87 ms, repetition time = 1800 ms, field of view = 256 mm, acquisition matrix 192 × 192, slice thickness = 1.3 mm, flip angle = 8°. 21 (link)
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