Hemorrhage in the Wall of Pyogenic Brain Abscess on Susceptibility Weighted MR Sequence: A Report of 3 Cases
Figure 2
(a) Postgadolinium T1 SE image shows the enhancing wall of the abscess (arrow). Note the prominent surrounding vasogenic edema with mass effect on the left lateral ventricle. (b) Susceptibility weighted image shows profound hypointensity (arrow) in the wall from presence of hemorrhage. Vasogenic edema shows hyperintense signals. (c) Diffusion image demonstrates bright signals due to restricted diffusion from the pus in the center of the abscess (arrow). (d) Apparent diffusion coefficient (ADC) map shows corresponding dark signals confirming true restricted diffusion in the center of the abscess (arrow). (e) Susceptibility weighted image at 6 months followup demonstrates residual hemosiderin in the healed abscess (arrow). Note the resolved edema and mass effect on the left lateral ventricle.
