Abstract:Y-90 radioembolization is an increasingly utilized treatment for both primary and metastatic malignancy in the liver. Understanding the biophysical properties, dosing concerns, and imaging appearance of this treatment is important for interventional radiologists and nuclear medicine physicians to provide important therapy. Y-90 radioembolization is efficacious and safe, although the possibility of complications does exist. This article provides a comprehensive in-depth discussion about the indications for Y-90 radioembolization, reviews the role of preprocedural angiography and MAA scans, illustrates different dosing techniques, compares and contrasts resin and glass microspheres, and confers potential complications.