In addition to open surgical port placement, radiological interventional implantation techniques have become increasingly widespread over time (Funaki B et al. 1997; Shetty PC et al. 1997). Unlike the cut-down technique, in which the cephalic or jugular vein is typically exposed, these methods involve percutaneous puncture of the target vein—primarily the subclavian vein or internal jugular vein—performed either with ultrasound guidance or as a so-called blind puncture using anatomical landmarks. The catheter is then inserted using the Seldinger technique. This eliminates the need for vessel looping, venotomy, and ligation. Both the implantation method and the choice of venous access route carry distinct advantages and disadvantages. The following section provides a detailed description of the various clinically established approaches.