The use of CO2 to create an optical window during intravascular optical coherence tomography in a patient with an allergic reaction to iodine contrast

A necessary condition for obtaining a high-quality image with optical coherence tomography (OCT) is the displacement of blood from visualized segment vessel to provide transparent medium between vascular wall and photo detector. Traditionally, liquid iodine-containing contrast used this, which can be dangerous in patients iodine allergy or renal insufficiency. We present clinical case successful OCT using CO2 patient anaphylactic reaction contrast. was performed monitor safety radiofrequency denervation. injected as standard into guide catheter located artery. With help CO2, it possible effectively displace artery obtain images microstructure.