You've seen an unusual vein in diagnostic imaging and are not sure what it is? You know that your head surgeon will grill you about variants of hepatic arteries next time you're in the operating room? Or are you simply tired of looking through endless books and papers while searching for anatomic variants of a particular vessel? This app is the answer: Over 800 anatomical illustrations with explanations for almost 500 individual vessels (arteries, veins, bile ducts and pancreatic ducts) are at