Figure 1
From: Internal jugular venous abnormalities in transient monocular blindness
MR imaging studies in a TMB patient with IJVs stenoses. This is a 46 year-old lady with recurrent and transient monocular blindness over right eye. Contrast-enhanced, axial T1-weighted image (A) showed bilateral IJV stenoses (arrows). (right IJV: grade 1; left IJV: grade 3). MR angiogram (B) revealed decreased venous flow over left sided venous routes and focal narrowing over right sided IJV (arrow) while the arterial system was relatively normal, which was also shown on three-dimensional time-of-flight MR angiogram (C).