T1 sagittal (left) along with T2 axial images reveal a well-circumscribed mass overlying the
left cerebral convexity with a prominent CSF cleft. Pronounced mass effect on the brain and
a left-to-right midline shift are noted.
Pre gad (left) alongside post gad coronal and axial (right) images reveal homogenous
enhancement of the mass with subtle dural tails noted as well, best seen on coronal (top)
post gad image.
Pre and post-contrast axial CT images (left) reveal enhancement, along with peripheral
calcification of the mass, best seen on pre-contrast image (top left). Sagittal Gd-enhanced
T1WI shows the mass extending to the superior sagittal sinus. An MR venogram MIP image
(bottom right) reveals slight compression of the superior sagittal sinus, but the sinus
A single voxel short-TE spectrum (left) shows normal metabolites in the right brain.
A single voxel spectrum from within the mass reveals abnormal elevation of glutamates (Glx),
particularly α glutamate. Alanine (1.48 ppm) is elevated, as well as lipid (0.9 ppm),
lactate (1.3 ppm) and choline (3.2 ppm). Creatine (3.0 ppm) is reduced.
Key words: mri ct mrv mrs tumor neoplasia