Magnetom verio 3.0 t mri scanner

MR imaging was acquired with a Siemens MAGNETOM Verio 3.0 T MRI scanner using a 12-channel head coil at the National Institute of Radiological Sciences. RsfMRI acquisition was performed with a gradient-recalled echo-planar imaging sequence (TR = 2000 ms, TE = 25 ms, flip angle = 75°, matrix = 64 × 64, thickness = 3.4 mm, voxel size = 3.44 × 3.44 × 3.74 mm³). The number of slices in each volume was 33, and 215 volumes were scanned in 7 min 10 s. All participants were instructed to keep still and to focus on the crosshairs projected onto a screen during scanning. T1-weighted imaging was acquired with a 3D magnetization-prepared rapid acquisition gradient-echo sequence (MPRAGE, TR = 2,300 ms, TE = 2.46 ms, flip angle = 9°, TI = 900 ms, matrix = 256 × 256, thickness = 1.0 mm, voxel size = 1.00 × 1.00 × 0.98 mm³).

Data collection: All data were collected using a Siemens MAGNETOM Verio 3.0 T MRI scanner from Germany. During the scanning process, patients were in a supine position, with their eyes closed and head immobilized. They wore noise-canceling earplugs, maintained calm breathing, remained awake, and minimized body movement.
EPI scan parameters: Repetition time (TR) = 3,000 ms; Echo time (TE) = 30 ms; Flip angle = 90°; Slice thickness = 3 mm; Number of slices = 43; Matrix size = 64 × 64; Field of view (FOV) = 230 mm × 230 mm; Voxel size = 3.6 mm × 3.6 mm × 3 mm; Total of 200 time points were collected.
T1 sequence scan parameters: TR = 1900 ms; Inversion time = 900 ms; TE = 2.93 ms; Flip angle = 9°; FOV = 256 mm × 256 mm; Slice thickness = 1 mm; Matrix size = 256 × 256.

A Siemens Magnetom Verio 3.0 T MRI scanner (Siemens, German) with a standard head coil was used to scan the patients in the Department of Radiology of Huashan Hospital, Shanghai, China. The gradient-echo EPI images of the whole brain parameters were set as follows: 33 slices, repetition time/echo time [TR/TE] = 2,000/35 ms, slice thickness = 4 mm, field of view = 256 mm, flip angle = 90°, image matrix: 128 × 128). In total, 200 scans (406 seconds) were acquired in the resting run. In addition, high-resolution anatomical images were acquired for all subjects. T1-weighted magnetization-prepared rapid-gradient echo (MPRAGE) sequences were acquired through the sagittal plane with the following parameters: TR = 2300 ms; TE = 2.98 ms; TI = 900 ms; flip angle = 9°; matrix size = 256 × 240; slice number = 176; field-of-view (FOV) = 256 × 240 mm; acquisition averages = 1; scanning time = 301s. Patients’ CT scans were collected for detecting and identifying cerebral lesions. If the quality of the fMRI data were not satisfactory, such as being confounded by excessive head movements, a scan was performed again on a subsequent day.
All subjects’ MRI scans were acquired under resting states. For each patient, consciousness assessment were performed according to the standardized Glasgow Coma Scale (GCS) and CRS-R^{24 (link)}.

A Magnetom Verio 3.0 T MRI scanner (Siemens Medical Solutions, Erlangen, Germany) equipped with a 32-channel head coil was used to obtain MRI scans of all subjects. The scanning parameters were as follows: repetition time (TR)/echo time (TE) = 10,300/95 ms, field of view (FOV) = 256 × 256 mm², matrix = 128 × 128, voxel size = 2.0 × 2.0 × 2.0 mm³, slice thickness = 2 mm, number of directions = 64, b = 1000 s/mm². DTI data preprocessing and atlas-based analysis (ABA) were carried out with FSL 5.0.9 (https://fsl.fmrib.ox.ac.uk/) and PANDA (Pipeline for Analysing braiN Diffusion imAges, http://www.nitrc.org/projects/panda/). The preprocessing steps included format conversion, mask generation and cropping, head motion and eddy correction, and spatial registration. Details for data acquisition and preprocessing are presented in Additional file 1.