Diagnostic neuroradiology for the interventional neuroradiologist

Figure 3 Patient with symptoms referable to the posterior fossa. A-C: Unenhanced computed tomography (CT) shows a possible hyperdense artery sign of the basilar artery (A) which is confirmed by CT angiography: the basilar artery enhances less than the rest of the vessels (B, C); D, E: Perfusion imaging shows a drop in hemodynamics in the posterior fossa; F: The coronal reconstruction of the angio-CT shows well the length of the thrombus.