PMC2684996_01
Left vertebral arteriogram (A) shows a complete occlusion of the distal basilar artery. Anteroposterior (B) and lateral (C) views of the angiogram obtained after the angioplasty and intra-arterial thrombolysis procedures demonstrates partial recanalization of the basilar artery and a single perforating thalamic artery (curved arrow) arising from the midline of the basilar bifurcation.
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F1
Angiography revealed a complete occlusion of the distal basilar artery (Fig. 1A). In addition, angiograms demonstrated a single perforating thalamic artery that was divided into two branches (Figs. 1B, C).
A. Nonenhanced CT scan performed immediately after the intraarterial thrombolytic therapy shows hyperdense lesions (arrows) in the bilateral paramedian regions of the thalami.. B. The follow-up CT scan obtained 24 hours after completing the intra-arterial thrombolytic procedure shows the disappearance of the hyperdense lesions and the development of hypodensities (arrows) in the bilateral paramedian thalamic regions.
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F2
A non-enhanced CT scan obtained immediately after the endovascular therapy showed bilateral symmetrical high attenuations in the paramedian thalamic regions (Fig. 2A). The follow-up nonenhanced CT scan obtained 24 hours after completing the intra-arterial thrombolytic therapy showed the disappearance of the hyperdense lesions and the development of hypodensities in the bilateral paramedian thalamic regions without a hemorrhagic transformation (Fig. 2B).