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 pCCTa | 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 | 74b | ||||||
| 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.