Fig 2.

Axial 3D-bFFE images at the level of each compartment of the JF on the left side. The angle between each compartment and the posterior petrosal surface was visualized by a line drawing. A−C, The dotted arrow indicates CN IX (A and B) and the black arrow indicates the CN X/XI complex (C). Note that the angle of the cochlear aqueduct (A) is the smallest, whereas the angle of the recess for the CN X/XI complex (C) is the largest. The angle of the recess for CN IX (B) is between the angles of the cochlear aqueduct and the recess for the CN X/XI complex.