Catheters include a catheter tube and an echogenic structure extending from a proximal portion of the catheter tube to a distal end of the catheter tube where a portion of the echogenic structure is at least partially formed in the distal end of the catheter tube. Such catheters may exhibit improved echogenicity. Methods of forming a tool for a clinical procedure performed upon a subject utilizing ultrasound guidance include forming a catheter and forming a portion of an echogenic structure within a distal end of the catheter. Methods of ultrasound guidance for a clinical procedure performed upon a subject may include such catheters.
