This document appears to be a presentation on various medical imaging techniques by Dr. Ahmad Hafez Afifi from Alexandria University. It discusses liver imaging including the portal vein, common bile duct, and hepatic artery. It also mentions imaging of focal nodular hyperplasia or hepatocellular carcinoma in the liver. Additionally, it covers gallbladder and biliary imaging, pancreas imaging, renal imaging, spleen imaging, and male pelvis imaging.