Fig. 1

Magnification of a contrast-enhanced T1-weighted axial magnetic resonance image showing the method used to measure the jugular foramen diameter. Here the red caliper indicates the minimal diameter of the right jugular foramen
Magnification of a contrast-enhanced T1-weighted axial magnetic resonance image showing the method used to measure the jugular foramen diameter. Here the red caliper indicates the minimal diameter of the right jugular foramen