The RT3S E-learning environment enables experts in vascular medicine to prepare educational training content for their trainees (i.e., future endovascular surgeons). Influenced by the Learning Design (LD) information model and building-upon LAMS, the learning process is realized by means of training scenarios (i.e., as an interactive sequence of learning steps). In RT3S, creating learning scenarios does not require that the editors of the scenarios are familiar with the underlying LAMS environment. The RT3S authoring environment is easy to use and customized (i.e., it can be adapted to the needs of the tutor and of the scenario) and enables tutors (e.g., expert surgeons) to easily prepare new educational content. Students (future surgeons) are trained on the assessment of real (and realistic) patient data and on decision-making processes for the management and treatment of patients.