Over 1,000 percutaneous transbrachial artery catheterizations have been performed for the placement of nonradiopaque polyethylene catheters for intraarterial chemotherapeutic infusions since 1965. Catheters have been left indwelling up to 131 days for continuous infusion. Thrombectomy has not been required in any patient, and catheter superselectivity was achieved with full patient ambulation without activity restriction. Large volume, slow injection rate angiography (infusion angiography) provides quality film studies of arterial and venous structures.