Magetom skyra machine

MRI data were acquired by the Department of Radiology, Yeouido St. Mary's Hospital, The Catholic University of Korea, with a 3T Siemens MAGETOM Skyra machine and an eight-channel Siemens head coil (Siemens Medical Solutions, Erlangen, Germany). We utilized the following parameters for the T1-weighted volumetric magnetization-prepared rapid gradient echo scan sequences: TE = 2.6 ms, TR = 1,940 ms, inversion time = 979 ms, FOV = 230 mm, matrix = 256 × 256, and voxel size =1.0 × 1.0 × 1.0 mm³. In terms of rs-fMRI, they were collected using a T2^*-weighted gradient echo sequence with TR = 2,000 ms, TE = 30 ms, matrix = 128 × 128 × 29, and voxel size = 1 × 1 × 2 mm³. One hundred and fifty volumes were acquired over 5 min while participants were instructed to “keep your eyes closed and think of nothing in particular.”

All MRI data were collected by the Department of Radiology, Yeouido St Mary’s Hospital, College of Medicine, The Catholic University of Korea, using a 3T Siemens MAGETOM Skyra machine and 32-channel Siemens head coils (Siemens Medical Solutions, Erlangen, Germany). We used following parameters; (1) the T1-weighted, three-dimensional, magnetization-prepared rapid gradient-echo (3D-MPRAGE) sequence was TE = 2.6 ms, TR = 1940 ms, inversion time = 979 ms, FOV = 230 mm, matrix = 256 × 256, and voxel size = 1.0 × 1.0 × 1.0 mm³; (2) the T2-weighted MRI sequences were TE = 91 ms, TR = 3700 ms, flip angle (FA) = 150°, FOV = 220 × 220 mm, matrix = 448 × 448 in-plane resolution, and 3 mm slice thickness. Resting-state fMRIs were collected using a T2-weighted gradient echo sequence with TR = 2000 ms, TE = 30 ms, matrix = 128 × 128 × 29, and voxel size = 1 × 1 × 2 mm³. A total of 150 volumes were acquired over 5 min while the patients were instructed to keep their eyes closed and think of nothing in particular.