PMC7352047_01
Phlebography before implantation of SVC filter. Yellow arrow, right brachiocephalic vein; blue arrow, left brachiocephalic vein; red arrow, cava superior vein.
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These procedures were conducted with the aid of phlebography through the introducer located the right internal jugular vein before and after insertion (Fig. 1, Fig. 2 ).
Control for SVC filter placement (inverted position).
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On the basis of phlebography, the superior vena cava filter placement was successfully performed without complications (Fig. 2).