In recent years, developments in ultrasound, computed tomography and magnetic resonance imaging have made important changes in the practice of diagnostic radio- logy. Concomitantly, invasive radiology for both diagnostic and therapeutic purposes has grown into a rapidly evolving subspecialty. This text represents a landmark in paediatric radiology. The three authors are distinguished radiologists who, over the past two decades, have greatly contributed to paediatric hepatology. Their pioneering work in the area of splanchnic angiography and diagnostic as well as therapeutic cholangiography was facilitated by their close day-to-day interaction with the Paediatric Liver Disease Unit at Höpital Bicetre. The contents and the format of this "atlas" are testimony to their knowledge of clinical hepatology and to their wide experience in invasive paediatric radiology. The out- standing quality of the images is enhanced by appropriate clinical descriptions which will help the reader understand the indications for these procedures, their accuracy and limitations.