Fig. 4

Superselective BRTO technique. a Oblique volume rendering (VR) image obtained from pre-BRTO CE-CT portal phase images shows GV supplied by posterior gastric vein (PGV) and small short gastric vein (SGV) and drained by gastrorenal shunt (GRS). b DSA image during balloon occluded retrograde venography of the GRS shows multiple medium sized collateral veins without contrast opacification of the GV. c The same as VR image in a but magnified showing only GRS, GV and PGV as a reference image for image d. d Fluoroscopic image at the end of BRTO shows 9F balloon guiding catheter positioned at lower GRS (solid black arrow) while microballoon catheter (white solid arrow) was positioned at the junction point between GRS and GV. There is complete opacification of GV and part of PGV with EOI