Clinical Significance of Hyperdense Lesions on Non-enhanced Brain CT Obtained Immediately after Arterial Revascularization in Acute Ischemic Stroke Patients

Figure 3

CT scan of a 58-year-old woman who had a sudden onset of impaired left limb movement. (a). The non-enhanced brain CT scan obtained immediately after intra-arterial thrombolysis showing a type II hyperdense lesion in the right lentiform nucleus with a CT value of 90-135 Hu. A type I hyperdense lesion was located in the right insular cortex with a CT value of 52-57 Hu (the latter was not included in this study). There was no mass effect in the above two lesions. (b). Follow-up CT scan obtained 24 hours after the end of AR, the hyperdense lesion of the right lentiform nucleus was obviously absorbed. The patient was not accompanied by deterioration of neurological symptoms.

(a)

(b)