|
FIG 1. MR images of the brain of a 70-year-old woman show a thrombosed aneurysm after endovascular coiling, with adjacent ring-enhancing lesion representing an abscess involving the brainstem and the right basal ganglia region.
A, Axial nonenhanced T1-weighted MR image (400/8/2 [TR/TE/NEX]), obtained through the pons, shows a focal low-intensity area.
B, Axial contrast-enhanced T1-weighted MR image (500/8/2), obtained through the pons, shows a ring-enhancing lesion.
C, Axial contrast-enhanced T1-weighted MR image (500/8/2), obtained through the midbrain, shows a ring-enhancing lesion adjacent to a thrombosed right posterior communicating artery aneurysm.
D, Coronal contrast-enhanced T1-weighted MR image (400/8/2), obtained through the brainstem, shows an oblong curved ring-enhancing lesion wrapping over a thrombosed right posterior communicating artery aneurysm.
|