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MR imaging of a patient 3-years status post-carbon monoxide(CO) poisoning revealed areas of abnormal signal bilaterally in the region of the glob us pallidus that had shorter T1 characteristics and longer T2 characteristics than cerebrospinal fluid, probably representing methemoglobin, and that is surrounded y a rim of decreased signal on T2-weighted images, felt to represent hemosiderin. This case demonstrates characteristic findings on MR imaging of CO poisoning, as well as observations that suggest prior focal hemorrhage. Typical findings, neuropathology, and the role of vascular injury and prognosis are discussed. |
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basal ganglia
basal ganglia,lesion of
carbon monoxide poisoning
cerebral infarction,hemorrhagic
globus pallidus
globus pallidus,lesion of
globus pallidus,lesion of,bilateral
intracerebral hemorrhage
MRI
MRI,abnormal
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