Fig. 3
From: Advanced imaging in adult diffusely infiltrating low-grade gliomas
Oligodendroglioma, grade II with 1p19q-codeletion, intact ATRX expression, immune-negative p53, and 2% Ki67 is located on the premotor area of the left frontal lobe on axial MR images. The irregularly contoured tumor has a heterogeneous high signal on T2 (a), FLAIR (b), and ADC (c) images and has a central intratumoral small low signal area consistent with calcification/hemorrhage. It has faint enhancement on post-contrast T1-weighted image (d). The tumor has relatively higher rCBVmax values than normal parenchyma on DSC-perfusion image (e) and ktrans values on DCE-perfusion image (f). The tumor has also high Cho/Cr ratio on the MR spectrum obtained by 144 ms echo time (g) at the similar areas of increased perfusion on colored Cho map (h)