Use of technetium-99m macroaggregated albumin to evaluate the position and condition of totally implanted venous and arterial access devices.

Technetium-99m macroaggregated albumin is used to assess the proper location and condition of a totally implanted venous and arterial access system prior to infusion therapy. The risk of drug extravasation is thus avoided. Delivery of the chemotherapeutic agents to the intended location is assured.