A liquid embolic system is a medical device used to block blood flow in vessels in the brain and peripheral vasculature by injecting a liquid substance that typically solidifies within the targeted lesion. This minimally invasive procedure is called embolization and is used to treat conditions like arteriovenous malformations (AVMs), tumors, and arterial bleeding (hemorrhage). A key component in liquid embolic systems is DMSO (dimethyl sulfoxide), which helps dissolve certain polymers and allows them to solidify safely once in contact with blood. Several products have been developed using this principle and are widely used in patient treatments. Liquid embolic systems offer an alternative to open surgery and continue to expand in use as research supports their safety and effectiveness in treating various vascular conditions.