1. A 30-year-old man with PSA
A 30-year-old man with PSA. A, Axial CT image demonstrates absence of the foramen spinosum bilaterally (black arrows).
A 30-year-old man with PSA. A, Axial CT image demonstrates absence of the foramen spinosum bilaterally (black arrows). B, Coronal CT image in the same patient shows enlargement of the tympanic part of the facial nerve canal, another indirect imaging sign of PSA. C, Lateral DSA image of the internal carotid injection shows the PSA arising from the ICA (arrows).
S. Vattoth et al. AJNR Am J Neuroradiol 2010;31:
©2010 by American Society of Neuroradiology