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and numerous other interventional medical procedures. Seldinger first published this technique for obtaining percutaneous access to blood vessels in 1953 for the publication Acta Radiologica. This has been described as a "substantial refinement" of a procedure first described by Dr. P.L. Farinas in 1942. This new technique introduced the practice of using a flexible wire to guide a catheter to previous unreachable vascular areas of the body.