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. 2013 Mar 27;28(4):628–630. doi: 10.3346/jkms.2013.28.4.628

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© 2013 The Korean Academy of Medical Sciences.

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Fig. 2 — Doppler sonogram of the pulsating flow in the mastoid emissary vein (MEV), correlating to the pulsatile tinnitus. Doppler sonography identified the location of the outer foramen of the MEV and the pulsating venous blood flow draining into the sigmoid sinus (A, B). The patient recognized reduction of the pulsatile tinnitus synchronously with the decrease of the flow-signal by compression of the left jugular vein (C) and the Valsalva maneuver (D). Arrows: starting points of compression of the left jugular vein and the Valsalva maneuver, respectively.