A 12-month-old girl with chronic infarction in bilateral middle cerebral artery territories. A 12-month-old girl with chronic infarction in bilateral middle.

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High-signal-intensity lesions on T2-weighted MR images

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Presentation transcript:

A 12-month-old girl with chronic infarction in bilateral middle cerebral artery territories. A 12-month-old girl with chronic infarction in bilateral middle cerebral artery territories. This patient had prior heart surgery. A, Transverse T1-weighted image shows a curvilinear hyperintense cortical lesion (arrows). B, Corresponding transverse susceptibility-weighted image shows dotted signal-intensity loss (arrow), which indicates hemorrhage, in the cortical lesions. Although we consider the signal-intensity loss on the laminar necrosis as hemorrhage because of discontinuity, it is difficult to strictly distinguish it from part of the cortical vein. Note that several small foci of dotted hemorrhage are also found in other parts of the brain parenchyma. T. Niwa et al. AJNR Am J Neuroradiol 2008;29:1795-1798 ©2008 by American Society of Neuroradiology