3T MRI Infant Brain Acquisition

Scans were performed on a Magnetom Trio Tim 3 Tesla or on Magnetom Skyra 3 Tesla (Siemens Medical, Erlangen, Germany) with a 32-channel adult head coil. Multi-echo volumetric magnetization prepared rapid gradient echo (MPRAGE) sequences (van der Kouwe et al., 2008 (link)) with volume navigators (vNav) for motion correction (Tisdall et al., 2012 (link)) were obtained in the sagittal plane with an average image resolution of 1 mm isotropic, higher than the typical clinical infant acquisition standard. A full list of acquisition parameters is described in detail in Table 2. The subjects were imaged under sedation or during natural sleep. Images were assessed for quality and scans considered not suitable for segmentation, due to degradation by motion or other artifacts, were discarded.