Magnetom skyra fit 3 t

GRASP MRI was performed using MAGNETOM Avanto FIT 1.5 T, MAGNETOM Skyra 3 T, and MAGNETOM Skyra FIT 3 T scanners (Siemens Healthineers, Erlangen, Germany) utilizing 20-channel head/neck coils. All patients were prepared in the scanner in a supine position. The conventional exam protocol consisted of an axial T1-weighted (T1w) TSE sequence (slice thickness ST = 4 mm), axial and coronal T2w FS/TIRM sequences (ST = 4 mm), and DWI acquisition. Sensitizing diffusion gradients were applied sequentially in the x, y, and z direction with b-values set to 0 and 1000 s/mm². Contrast-enhanced sequences included a dynamic GRASP acquisition with simultaneous contrast injection (injection speed 2.0 ml/s via 20G IV catheter, injection delay 20s, total dynamic acquisition time 4:23 min, 1.5 mm isotropic resolution), and an axial and coronal T1w FS post-contrast sequence (ST = 4 mm, Fig. 1). GRASP-specific sequence parameters are presented in Table 1.