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AJR Teaching File: Acute Onset Headache

Ashok Jayashankar1, Stephen M. Sabourin and Mark E. Mullins

1 All authors: Department of Radiology, B-115, Emory University School of Medicine, 1364 Clifton Rd. NE, Atlanta, GA. 30322.


Figure 1
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  		Fig. 1A —60-year-old hypertensive man with acute onset of headache and no history of trauma. Unenhanced axial CT scan of head illustrates hematocrit level (curved arrow) and hyperdense nodular focus along periphery (straight arrow).

 

Figure 2
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  		Fig. 1B —60-year-old hypertensive man with acute onset of headache and no history of trauma. Axial unenhanced T1-weighted MR image of brain illustrates signal heterogeneity (inside circle) without apparent intrinsic T1 hyperintensity in left parietal lobe in region of abnormalities identified on A.

 

Figure 3
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  		Fig. 1C —60-year-old hypertensive man with acute onset of headache and no history of trauma. Axial unenhanced gradient-recalled echo T2*-weighted susceptibility MR image of brain illustrates decreased signal (in oval) most consistent with blood products. No other remote lesions were identified on this examination.

 

Figure 4
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  		Fig. 1D —60-year-old hypertensive man with acute onset of headache and no history of trauma. Axial contrast-enhanced T1-weighted MR image of brain illustrates nodular exophytic enhancement along (arrowhead), smooth rim enhancement around (straight arrow), and hematocrit level (curved arrow) within a left parietal lobar hematoma. No other remote lesions were identified on this examination.

 

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