Left to right: T2, FLAIR, T1, and gradient echo (GRE) images show a large
right temporal lobe mass with surrounding edema. The internal signals are
homogenous. However, in the periphery, areas of heterogeneity can be
seen, especially a dark ring seen on T2, FLAIR, and most marked, on the
GRE image. Note the relative isointense signals on T1WI.
Same sequences with more superior sections show heterogeneous
internal signals, with multiple hypointense ring-like structures.
Key words: mri vascular
Acute lobar hemorrhage
(oxy- & deoxyhemoglobin)