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Figure 5c. Acute onset of right hemiparesis and aphasia in a 52-year-old man. CT scan was obtained 4 hours after onset of symptoms and demonstrated a left frontoparietal intraparenchymal hematoma. MR images were obtained 7 hours after onset of symptoms. (a) Axial CT scan of the head demonstrates a central area of increased attenuation (curved arrow) compatible with a hemorrhage. Peripherally, there is surrounding edema manifested as decreased attenuation (straight arrows). (b) Axial intermediate-weighted MR image (3,000/25, 5-mm section thickness, 256 x 192 matrix) demonstrates diffuse hyperintensity in the left frontoparietal lobe (straight arrow). There is a more focal area posteriorly that is heterogeneous (curved arrow). (c) Axial GRE image (3,000/25, 23° flip angle, 5-mm section thickness, 256 x 192 matrix) demonstrates marked hypointensity (curved arrow) compatible with a hematoma. This demonstrates the increased sensitivity of GRE images for the detection of intraparenchymal hemorrhage.