Randomized-Controlled Study to Evaluate the Diagnostic Quality and Safety of Automated Carbon Dioxide Angiography (ACDA) With a Robot-supported Angiography System in Combination With a CO2-Injector System in Patients With Peripheral Arterial Occlusive Disease

CO2-angiography was used as an intra-arterial contrast agent since the 1970s particularly in patients who were hypersensitive to iodinated contrast material or whose renal function was compromised. It is in fact an effective and low-risk alternative to iodine-enhanced conventional angiography because it is not associated with nephrotoxicity or allergic reactions. The image quality influencing the diagnostic validity seems to be a restriction. Now, with the availability of high-resolution DSA and a reliable gas delivery system, CO2 angiography is more and more widely used for vascular imaging and endovascular procedures. Our study will specifically examine the image quality and safety of carbon dioxide gas as intra-arterial contrast agent using the innovative Artis Zeego Q angiography-system of Siemens Healthineers with the automated CO2-injection system of Angiodroid.