Ge excite

Brain computed tomography was performed using one of our multi-detector CT scanners, including GE LightSpeed 16, VCT (GE Healthcare, Milwaukee, WI, USA), SOMATOM Sensation 64, and Emotion 16 (Siemens Medical Solutions, Erlangen, Germany). Axial cuts were taken at the top of the C1 lamina through the top of the calvarium. Axial images were reconstructed with 5-mm-thick sections at 5-mm intervals. In some of our subjects, coronal reconstructed images of 5 mm thickness were also available.
Magnetic resonance imaging (MRI) of the brain was performed on a 1.5TMR unit, either GE Excite (GE Healthcare) or MAGNETOM Sonata (Siemens Healthcare). The scanning protocol included axial FLAIR, fast spin-echo T2-weighted sequences, and a coronal T1WI or a 3D T1WI. The axial slices were positioned to run parallel to a line that joins the most inferoanterior and inferoposterior parts of the corpus callosum and had a thickness of 5 mm with a gap of 1.5 mm.

All the participants were scanned using a 1.5T GE scanner (GE EXCITE, Milwaukee, WI, USA) with a head coil. Participants were placed in a supine position with their head fixed by cushions to minimize head motion, and all participants were provided earplugs (29 dB rating) to attenuate scanner noise. Next, high-resolution structural brain images were collected using a three-dimensional T1-weighted MRI sequences with an axial Fast Spoiled Gradient Echo sequence [repetition time (TR) = 11.5 ms, echo time (TE) = 5.1 ms, flip angle = 15°, matrix size = 256 × 256 pixels, field of view = 240 mm × 240 mm, slice thickness = 0.6 mm, and 232 contiguous transverse slices].
A neurosurgeon blinded to patients’ clinical features manually delineated the tumor volume via the MRIcro toolbox.² None of the HC presented brain structural abnormalities as assessed by another experienced neurosurgeon, blindly.