Interventional cardiac MRI has been hampered for decades by the lack of safe and visible devices. Guidewires (long, elongated metals) risk RF-induced heating under MR, and often incorporate ferromagnetic markers (e.g.stainless steel) that can be used for image guidance. We propose MR-guided interventions at 0.55T to avoid RF-induced heating. Here we show that at 0.55T, ferromagnetic markers maintain visibility and create identical artifacts to those observed at 1.5T. We show that using a high-performance low field MRI system may enable progress in interventional MRI due to improved device safety with retained image quality.