Cohen O, et al. – This study aimed to demonstrate a proof of concept of magnetic resonance (MR) coagulation, in which MR imaging scanner–induced radiofrequency (RF) heating at the end of an intracatheter long wire heats and coagulates a protein solution to effect a vascular repair by embolization. It was revealed that magnetic resonance coagulation has the potential to embolize vascular defects by coagulating a protein solution delivered by catheter using magnetic resonance imaging scanner–induced RF heating of an intracatheter wire.