Article Figures & Data
Figures
- Fig 1.
Postinterventional CCT of 3 different patients with hyperattenuated lesions in the basal ganglia (A, arrows), cortex (B, arrows), and cortical sulci (C, arrows).
- Fig 2.
Flow diagram of patient identification and imaging findings. HCLs indicate hyperattenuating intracerebral lesions; pCCT, postinterventional cranial CT; CE, contrast enhancement; HT, hemorrhagic transformation.
- Fig 3.
A 47-year-old man with acute occlusion of the right MCA and mechanical recanalization. Postinterventional CCT (A) shows a hyperattenuated intracerebral lesion in the right putamen (thin arrow) and early signs of ischemic infarction in the right anterior insula (thick arrow). MR imaging (FLAIR in B, and T2* in C) 2 days following the event shows pure ischemic infarction in both localizations (right putamen and anterior insula; thin and thick arrows in B and C). Furthermore, MR imaging shows an intracerebral hematoma (PH1) in the right parieto-occipital lobe (arrowheads on B and C), where no hyperattenuated lesion was evident on postinterventional CCT. Clinical outcome of this patient was good (mRS 1).
Tables
- Table 1:
Demographic and clinical characteristics of the study population (N = 101 patients)
No.a No. (%) Median IQR Age (yr) 101 71 21.5 Sex 101 Men 38 (37.6%) Women 63 (62.4%) NIHSS score on admission 98 15 6 No. of CVRFs 81 1 1 Etiology of stroke 101 TOAST 1 17 (16.8%) TOAST 2 63 (62.4%) TOAST 3 5 (5%) TOAST 4 16 (15.8%) Clinical outcome 98 4 2 Good (mRS 0–3) 34 (33.7%) mRS 0 5 (5%) mRS 1 5 (5%) mRS 2 13 (12.9%) mRS 3 11 (10.9%) Poor (mRS 4–6) 64 (63.4%) mRS 4 39 (38.6%) mRS 5 14 (13.9%) mRS 6 11 (10.9%) Note:—CVRF indicates cardiovascular risk factors; Trial of Org 10172 in Acute Stroke Treatment (TOAST) 1, large-artery atherosclerosis; 2, cardioemboly; 3, dissection; 4, unknown etiology.
↵a No. indicates number in which the parameter was available in this retrospective study.
- 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 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.
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