The research proposed here would bring the application of guided needle insertion to its clinical implementation, specifically addressing the placement of the Peripherally Inserted Central Catheter (PICC) line. The PICC line is increasingly viewed as a safe alternative to direct central line placement in the jugular, subclavian, and femoral veins, while being easier to maintain than a peripheral intravenous line. This study will test the hypothesis that PICC lines can be placed by experienced intravenous (IV) team nurses using the SF for real-time US guidance.