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Fig 3. A and B, Brain images after cerebral infarction. Induction of cortical cerebral infarction without hemorrhage is confirmed by MR T2-weighted images (A) and T1-weighted images (B) on day 2 after induction of stroke. C–G, Vascular structure 9 days after cerebral infarction. Compared with the contralateral nonischemic hemisphere (C), remarkable atrophic changes are observed in the ischemic hemisphere (E). With SR images, in contrast to the nonischemic side (D), degradative changes in penetrating intracerebral arteries are observed on the ischemic side, though surface branches of the MCA are still visualized (F). In coronal sections of cerebral SR microangiograms (G), compared with the contralateral nonischemic hemisphere, penetrating intracerebral arteries are scarcely visualized in the ipsilateral ischemic hemisphere (ie, the latter appeared as an apparently "avascular area"). Scale bars: 1 mm (C and E), 500 µm (D and F), and 2 mm (G).
