[Teleteaching with CONRAD. From collected cases to interactive learning system].

Radiological teaching files on the Internet suffer from certain restrictions such as limited user interactivity. The Internet teaching project CONRAD (computer online network for radiological didactics) circumvents these restrictions by using a new database structure that also reflects the development of a diagnosis over time. The cases are presented in the internet with different HTML-based teaching programs. To support interactivity, CONRAD offers the building of online learning groups over the internet.