A New Classification System for Postinterventional Cerebral Hyperdensity: The Influence on Hemorrhagic Transformation and Clinical Prognosis in Acute Stroke

Figure 2

The upper row of images (a–d) show the four types of PCHD, and the lower row of images (e–h) show the prognosis of TH in the corresponding four patients. PCHD-1 showing small area of hyperdensity (the white arrow) without space-occupying effects (a), no TH in follow-up SWI image (e). PCHD-2 showing more confluent hyperdensity at the right basal ganglia without space-occupying effects (b), HI-1 was observed during follow-up (f). PCHD-3 showing hyperdensity at the right basal ganglia accompany the ipsilateral narrow sulci (c), pH-1 was observed during follow-up (g). PCHD-4 showing hyperdensity with a significant space-occupying effect (d), pH-2 was observed during follow-up (h).

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