X‐Ray Visible Gelatin/NaHCO 3 /BaSO 4 Ternary Composite Microspheres for Improved Drug Uptake in Simulated Transcatheter Arterial Embolization

) contrast agents into the gelatin embolic microsphere. We further systematically evaluated its physicochemical and biocompatibility properties. This study provides a novel strategy for developing EAs with integrated radiopacity stability and improved drug uptake, holding potential for advancing precision in interventional therapies.