[Carbon dioxide angiography: technique and indications].

Today angiographic procedures are more frequently used. The need for alternative intravascular contrast agents has increased in order to solve clinical situations like contrast allergy and renal insufficiency. The alternative contrast agent that we have used in thirty patients is CO2 without any complications. CO2 is used solely or in conjunction with Gadolinium or non-ionic contrast media. The alternative contrast agent can be effective, providing sufficient contrast for diagnostic angiography and vascular interventional procedures.