Inclusion Criteria:  Patients with blunt splenic injury. Age ≥ 18 years old AAST Grade 3 spleen injuries with significant hemoperitoneum (2 or more areas of hemoperitoneum) AAST Grade 3 with the presence of contrast blush or pseudoaneurysm on contrast CT scan or angiography AAST Grade 4 and 5 spleen injuries regardless of the presence of blush  Exclusion Criteria:  Hemodynamic instability on arrival at the hospital Patients undergoing immediate surgical exploration for splenic or other intra-abdominal injuries Patients with non-contrast CT scan of the abdomen Patients undergoing angioembolization for other injuries Patients with severe traumatic brain injury (GCS 8 or less) Patients who are unable to give consent Patients with contraindications for angioembolization (severe contrast allergy, chronic kidney disease (not on dialysis)) Pregnancy Prisoners