X-Ray, CT, Nuclear Medicine Abbreviations - A • AI Acceleration Index • ALARA As Low As Reasonably Achievable (5 database hits) • ALEF Area Length Ejection Fraction • ALI Annual Limit of Intake • AMA American Medical Association • AMU Atomic Mass Unit (3 database hits) • Ao Aorta • AoD Aortic Root Diameter • AP Anterior Posterior (1 database hit) • APTD Anteroposterior Trunk Diameter • AR Arrhythmia Rejection (2 database hits) • AR Aortic Regurgitation • ARS Acute Radiation Syndrome (1 database hit) • ARSAC Administration of Radioactive Substances Advisory Committee • AS Aortic Stenosis • ASRT American Society of Radiologic Technologists • AT Acceleration Time • ATP Adenosine Triphosphate • AUA Average Ultrasound Age • AUC Area Under Curve The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at or repair. - Douglas Adams |