He is a contributing author on Amirsys abdomen StatDX content. A graduate of the University of Texas medical school at Houston, he first trained in internal medicine and gastroenterology before beginning his radiology residency at Stanford University, where he also did a fellowship in body imaging. Dr. Poullos is a radiologist with expertise in body and oncologic imaging. He participates in the multidisciplinary care of cancer patients at the Stanford cancer Institute, specifically in the diagnosis and staging of hepatobiliary and pancreatic malignancies. He is also the director of the CT colonography program at Stanford. Dr. Poullos has a strong interest in the education of both residents and fellows. He is currently serving as the associate program director of the Stanford radiology residency program.