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Table 2: Characteristics of hyperattenuated intracerebral lesions regarding Hounsfield units in patients with contrast enhancement versus hemorrhagic lesions on follow-up 1 and patients with final ischemic-versus-hemorrhagic infarction, respectively
No. HU Mean HU Maximum
Median IQR P Value Median IQR P Value
HCL on pCCT^a 75 52 15 94 61 
Follow-up 1 75 
    CE 29 45 4 72 19.5 
<.001 <.001
    HL 46 58 13.5 113 59.5 
Final infarction 74^b 
    Ischemic 35 46 7 80 27 
<.001 <.001
    Hemorrhagic 39 58 11 109 68 
Note:—HCL indicates hyperattenuated intracerebral lesion; CE, contrast enhancement; HL, hemorrhagic lesion; pCCT, postinterventional cranial CT.
↵a All patients with hyperattenuated intracerebral lesions in the basal ganglia and cortex; patients with pure sulcal hyperattenuating lesions (n = 10) are excluded in this calculation because Hounsfield unit values were not evaluated in these patients.
↵b One case with hyperattenuated lesions on postinterventional CCT had no infarction on follow-up 2 and was therefore excluded.