AJDRAJNR - American Journal of Neuroradiology

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FIG 2. B-mode, real-time imaging with color Doppler recording of vertebral venous valve’s opening and closing. VV, vertebral vein.

A, During early opening phase.

B, During opening phase.

C, During closing phase.





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Copyright © 2009 by the American Society of Neuroradiology. Print ISSN: 0195-6108 Online ISSN: 1936-959X