Which technique, introduced in 1953, is named after its developer and involves arterial access via needle puncture followed by guidewire placement?

• A. Sven-Ivar Seldinger
• B. Mason Sones
• C. Wilhelm Roentgen
• D. Charles Dotter

Answer: (A)

The main idea here is the Seldinger technique, a safe way to gain arterial access using a needle puncture followed by a guidewire. In 1953, Sven-Ivar Seldinger described this method: you puncture the vessel with a needle, pass a flexible guidewire through the needle into the lumen, remove the needle while keeping the wire in place, and then advance a catheter over the wire into the vessel before removing the wire. This sequence—puncture, wire, catheter—allows precise, minimally traumatic catheter placement and became the standard for angiography and many vascular interventions.

This technique revolutionized how arterial and venous access is obtained, enabling safer diagnostic angiography and later a wide range of interventional procedures in cardiology and radiology.

As context, this is distinct from Mason Sones, who is known for pioneering selective coronary angiography, Wilhelm Roentgen, who discovered X-rays, and Charles Dotter, who advanced percutaneous transluminal angioplasty.