Non-clinical trials [1] have shown that the sinus-XL stent is MR Conditional for individual and overlapping lengths of up to 180 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: