CO2-Angiography-Study to Evaluate Diagnostic and Safety to Patients With Peripher Arterial Stenotic or Occlusive Disease.

"Randomization either in the study arm (CO2) or in the control arm (iodine-CM) occurs right before angiography. Stenosis graduation and length are measured after diagnostic angiography and before intervention. The calculated values through the software-quantification-tool, including also a final sequence of the distal outflow with the same contrast media used during intervention, are be compared and statistically analyzed.~A pain protocol to the current pain-situation is led by the present medical-laboratory assistant after administration of CO2 and iodine-CM during intervention."