Navigated Liver Surgery (image) Fraunhofer-Gesellschaft Caption Professor Wang (left) of the EHBH in Shanghai operates on a liver with the support of the navigation system. The position of the surgical instrument in the organ is continuously displayed on the screen. This helps the surgeon to orient himself and to improve accuracy and safety. Credit Fraunhofer MEVIS Usage Restrictions The picture may be used for editorial purposes only. It is protected by copyright. The use is free of charge if the reference is mentioned. Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.