Magnetom skyra 3.0 t scanner

All subjects in this study underwent rs-fMRI acquisition at the Department of Radiology of Guang’anmen Hospital at the China Academy of Chinese Medical Sciences using a Magnetom Skyra 3.0-T scanner (Siemens, Erlangen, Germany). Before scanning, the subjects were asked to wear earplugs and noise-canceling headphones, secure their heads with hoods, lie flat on the examination bed, avoid active thinking, and keep their minds awake.
The scanning parameters were as follows: for the BOLD-fMRI, TR/TE = 2000/30 ms, matrix = 64 × 64, flip angle = 90°, slice number = 43, field of view = 240 × 240 mm², slice thickness/spacing = 3.0/1.0 mm, number of obtained volumes = 200, and scanning time = 6 min 40 s, and for the three-dimensional T1-weighted imaging, TR/TE = 2500/2.98 ms, matrix = 64 × 64, flip angle = 7°, slice thickness = 1 mm, field of view = 256 × 256 mm², slice number = 48, slices = 192, and scanning time = 6 min 3 s.

All subjects in this study underwent MRI using a Magnetom Skyra 3.0 T scanner (Siemens, Erlangen, Germany). The subjects generally underwent rs-MRI scans within 5 days of enrollment. Before the scanning procedure, the patients were instructed to remain awake and avoid active thinking. During the scanning process, the patients were required to wear earplugs and noise-canceling headphones, use a hood to immobilize the head, and lie flat on the examination bed. The scanning procedure involved a localizer scan, high-resolution three-dimensional T1-weighted imaging, and BOLD-fMRI.
The scanning parameters were as follows: for three-dimensional T1-weighted imaging, time repetition/time echo = 2,500/2.98 ms, flip angle = 7°, matrix = 64 × 64, field of view = 256 mm × 256 mm, slice thickness = 1 mm, slice number = 48, slices = 192, and scanning time = 6 min 3 s; for BOLD-fMRI, time repetition/time echo = 2,000/30 ms, flip angle = 90°, matrix = 64 × 64, field of view = 240 mm × 240 mm, slice number = 43, slice thickness/spacing = 3.0/1.0 mm, number of obtained volumes = 200, and scanning time = 6 min 40 s.

In this study, all subjects underwent data acquisition using a Magnetom Skyra 3.0-T scanner (Siemens, Erlangen, Germany) at Guang’anmen Hospital, China Academy of Chinese Medical Sciences. Subjects wore noise-cancelling headphones, secured their heads with a hood, closed their eyes to keep their minds clear and avoided active thinking.
The scanning parameters meet the following criteria: For three-dimensional T1-weighted imaging, repetition time (TR)/echo time (TE) = 2500/2.98 ms, flip angle (FA) = 7°, matrix = 64 × 64, slice number = 48, field of view (FOV) = 256 × 256 mm², slice thickness = 1 mm, slices = 192, time = 6 min 3 s. for BOLD, TR/TE = 2000/30 ms, matrix = 64 × 64, slice number = 43, FOV = 240 × 240 mm², FA = 90°, number of obtained volumes = 200, slice thickness/gap = 3.0/1.0 mm, time = 6 min 40 s.

All the participants were subjected to magnetic resonance imaging in a Siemens Magnetom Skyra 3.0-T scanner (Erlangen, Germany). A T1-weighted sagittal isotropic magnetization-prepared rapid acquisition gradient-echo sequence was obtained for each subject with a standard head coil (repetition time=1900 ms, echo time=2.01 ms, field of view=256 mm, slice thickness=1.0 mm and voxel size=1.0 × 1.0 × 1.0 mm³). A single-shot echo-planar imaging sequence was applied for DTI assessment (repetition time=6400 ms, echo time=86 ms, field of view 256 mm, 96 × 93 matrix size). Each scan produced 55 slices (thickness=2.5 mm, no gap) and 76 contiguous axial slices (64 gradient directions, two b values (0 and 1000 s mm⁻²)). Both the sequences were reviewed by an experienced radiologist to exclude clinical abnormalities. All the participants were asked to remain quiet during scanning. Ear plugs and foam pads were used to minimize noise exposure and head movements.