Inclusion Criteria:  Diagnosis of asymptomatic abdominal aortic aneurysm AAA >3cm in maximum diameter; Minimum 2 years prior ultrasound or CT imaging of their AAA; No prior treatment for AAA; Age >50 years; No contraindications to PET/MRI, such as claustrophobia;  Exclusion Criteria:  Pregnant females. All women of child-bearing potential must receive a negative urine pregnancy test prior to administration of 68Ga-DOTATATE; Allergy and/or hypersensitivity to MRI contrast agents (gadolinium) or components of 68Ga-DOTATATE drug product (as listed in IB); Presence of pacemaker or implanted cardioverter defibrillator (ICD); History of alcohol or substance abuse.