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.
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.
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.
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.
The hypointense component posteriorly on the gradient echo image, which was
hyperintense on T1, is consistent with intracellular methemoglobin.
Key words: mri trauma
NAT (non-accidental trauma)
- Multiple subdural hematomas
of varying ages & brain contusions