Non-clinical trials [1] have shown that the sinus-SuperFlex DS stent is MR Conditional for individual and overlapping lengths of up to 50 mm in accordance with the guidelines set forth in the American Society for Testing Materials ASTM F2503-13 (Standard Practice Marking Medical Devices and Other Items for Safety in the Magnetic Resonance Environment). A patient with this stent can safely be scanned in an MR system meeting the following conditions: