Internal auditory meatus vascular loops and vestibulocochlear neurovascular contact on MRI: Are they associated with pulsatile tinnitus? - Takeaways - MDSpire
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Vascular Loops in the Internal Auditory Meatus and Neurovascular Contact of the Vestibulocochlear Nerve on MRI: Their Potential Link to Pulsatile Tinnitus

  • By

  • Mervyn L. Chong

  • Kyle R. S. Stephenson

  • Mehrshad Sultani Tehrani

  • Irumee Pai

  • Steve E. J. Connor

  • May 12, 2025

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  • 1

    Pulsatile tinnitus (PT) accounts for 4–10% of tinnitus cases and is characterized by rhythmic sound linked to the cardiac cycle.

  • 2

    Imaging for PT aims to identify underlying causes, with positive findings ranging from 44% to 91%, including vascular abnormalities.

  • 3

    Normal internal auditory meatus vascular loops (IVLs) may contribute to PT through mechanisms like neurovascular contact and turbulent blood flow.

  • 4

    Most studies show no significant difference in tinnitus incidence between ears with IVLs or vestibulocochlear nerve contact and controls.

  • 5

    The study aims to assess the association of IVLs and nerve contact with PT using high-resolution MRI in a case-controlled design.

Original Source(s)

Internal auditory meatus vascular loops and vestibulocochlear neurovascular contact on MRI: Are they associated with pulsatile tinnitus?

  • by Mervyn L. Chong, Kyle R. S. Stephenson, Mehrshad Sultani Tehrani, Irumee Pai, Steve E. J. Connor

  • May 12, 2025

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