The internal pudendal artery can be visualized in transverse view with Color Doppler at the level of the ischial tuberosity.
The needle is inserted with in-plane technique from the medial end of the probe aiming just lateral to the artery. 10 mL of local anaesthetic is injected bilaterally.
Visualization of the internal pudendal artery with Color Doppler. Superficial transverse perineal muscle (spt). Deep transverse perineal muscle (dpt).