What is not a MRI feature of BESS? 1) Widening of the bifrontal and anterior interhemispheric CSF spaces 2) No flattening of adjacent gyri 3) Normal sulci posteriorly 4) Normal ventricular size (or modestly increased without pressure effects on the surrounding brain tissue) 5) Cerebral atrophy
Cerebral atrophy is not a BESS feature
Patient was scanned for RMI at 6 m old
On T2-Weighted sequences water, including CSF, is bright. Here you can appreciate the normal sulcus posteriorly and the normal subarachnoid space posteriorly by contrast to the enlargement of the subarachnoid space in the frontoparietal regions and to the wide sulcus anteriorly
T1 Inversion Recovery produces more pronounced grey-white matter differentiation than regular T1-weighted images. Here you can appreciate the widening of the bi-frontal and anterior interhemispheric CSF spaces without flattening of adjacent gyri.