Meningioma

Question 1

Signal characteristics?

Answer 1

isointense to grey matter on both T1 and T2 weighted imaging enhancing vividly on both MRI and CT

Question 2

Mr spectroscopy of Meningioma?

Answer 2

increase in alanine (1.3-1.5 ppm)
increased glutamine/glutamate
increased choline (Cho): cellular tumor
absent or significantly reduced N-acetylaspartate (NAA): non-neuronal origin
absent or significantly reduced creatine (Cr)