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Bilateral left greater than right low attenuation extraaxial fluid collections are present in the
frontal regions. A small focus of hyperdensity along the medial aspect indicates blood
products of different ages. Areas of low attenuation without mass effect are noted in the
left temporal, parietooccipital, & thalamic regions, consistent with encephalomalacia.
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Axial CT images more rostrally show the layering blood products of different
ages in the left subdural hematoma. Encephalomalacia is again seen in the
left frontoparietal and occipital regions.
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Axial T2 and FLAIR weighted images clearly show the left convexity blood products of
varying ages, as well as the area of chronic encephalomalacia in the left parietal region.
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On coronal and sagittal T1 weighted images without contrast there is increased signal
intensity consistent with methemoglobin (subacute blood), as well as the isointense
signal of the more chronic blood.
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The hypointense component posteriorly on the gradient echo image, which was
hyperintense on T1, is consistent with intracellular methemoglobin.
Key words: mri trauma
Brain Diagnosis:
NAT (non-accidental trauma)
- Multiple subdural hematomas
of varying ages & brain contusions