PURPOSE To estimate and compare the risk of radiation-induced hepatic toxicity (RIHT) in helical tomotherapy and fixed-beam intensity-modulated radiotherapy (IMRT) for the treatment of hepatocellular carcinoma (HCC). MATERIALS AND METHODS Twenty patients with unresectable HCC treated with tomotherapy were selected. We performed tomotherapy re-planning to reduce the non-target normal liver vol...

We present an overview of the research on realtime networking in the Hard-Real-Time Systems research group at the department of Computer Systems, Uppsala University. This includes a presentation of the general motivation and goals, as well as results and plans. On a more technical level, we present our method for providing timing guarantees in ATM-networks.