8 channel head coil

All the MRI data were collected on 3.0 Tesla MR scanners (Siemens, Erlangen, Germany) with 8-channel head coils at the Department of Radiology of the First Affiliated Hospital of Nanchang University. All participants were asked to keep still, and keep their eyes closed but not to fall asleep or think about anything during the MRI scan. Foam pads were used to reduce head movements, and earplugs were used to decrease the noise. First, conventional axial T2-weighted imaging [repetition time (TR) = 4000 ms, echo time (TE) = 113 ms, thickness = 5 mm, gap = 1.5 mm, FOV = 220 mm × 220 mm, slices = 19] and axial T1-weighted imaging [TR = 250 ms, TE = 2.46 ms, thickness = 5 mm, gap = 1.5 mm, field-of-view (FOV) = 220 mm × 220 mm, slices = 19] were performed. Then, high-resolution three-dimensional T1-weighted images were obtained using a brain volume sequence (TR = 1900 ms, TE = 2.26 ms, thickness = 1.0 mm, gap = 0.5 mm, FOV = 250 mm × 250 mm, matrix = 256 × 256, flip angle = 9°, 176 sagittal slices). Finally, resting-state fMRI data were collected using an echo-planar imaging sequence with the following parameters: TR = 2000 ms, TE = 30 ms, flip angle = 90°, FOV = 230 mm × 230 mm, matrix = 64, thickness = 4 mm, gap = 1.2 mm. Each brain volume consisted of 30 axial sections, and each functional run comprised 240 volumes.

All the MRI datas were collected on 3.0 Tesla MR scanners (Siemens, Erlangen, Germany) with 8-channel head coils. All participants laid down on the scanning bed; earplugs were used to minimize scanner noise, and foam pads were used to reduce head movements. The participants were asked to stop thinking as soon as possible and to closed their eyes, but remain awake during MRI scan. First, conventional T2-weighted images (repetition time (TR) = 4000 ms, echo time (TE) = 113 ms, slices = 19, 5-mm slice thickness, 1.5-mm gap, field of view (FOV) = 220 mm × 220 mm) and T1-weighted images (TR = 250 ms, TE = 2.46, the same slices, slice thickness, gap, and FOV to T2WI) and were acquired. A total of 176 high-resolution T1-weighted images were collected using sagittal orientation three-dimensional spoiled gradient-recalled echo sequence (TR = 1900 ms; TE = 2.26 ms; 1.0-mm thickness with no gap; acquisition matrix = 256 × 256; FOV = 250 mm × 250 mm, flip angle = 9°); 30 axial slices and 240 functional images were obtained using gradient-recalled echo-planar imaging pulse sequence (TR = 2000 ms; TE = 30 ms; 4.0-mm thickness; 1.2-mm gap; acquisition matrix = 64 × 64; FOV =230 mm × 230 mm; flip angle =90°).