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Therapeutic angiography. Its value to the surgical patient.

Standard angiographic techniques formerly used exclusively as diagnostic modalities have been modified to serve as definitive or adjunctive therapeutic measured. The techniques include transcatheter embolization; infusion of vasoactive drugs, chemotherapeutic agents and radioactive particles; tamponade of bleeding arteries and balloon catheters; extraction of vascular foreign bodies and retained biliary tract stones and transluminal arterial dilation. These techniques have been proved effective and safe when used judiciously.