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. 2011 May;32(5):938–946. doi: 10.3174/ajnr.A2386

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Fig 1. — Patient with MS (a 43-year-old woman) shows normal examination findings on TOF (A) and TRICKS (B) of both IJVs pretreatment. C, Doppler sonography shows the presence of a septum (arrow) in the right IJV (upper image) and an annulus (arrow) in the left IJV (lower image). D−F, Catheter venography (D) confirms the presence of a septum (arrow) in the right IJV and an annulus (arrow) in the left IJV. The posttreatment 6-month follow-up shows normal examination findings on TOF (E), TRICKS (F), and Doppler sonography (G).