It is known that the teaching of medicine involves associating theory and practice. This is of particular importance in the teachings of diagnosis by image. The methodology of problem based learning allows for the reaching of a wide range of people and stimulates clinical and critical thinking and self teaching, essential characteristics of every physician. Having this in mind, we started the project "Image of the Week". The project consists of an internet page in the medical school's website where every week a case and an image is published, together with an objective question. The visitor is encouraged to answer the question correctly to gain access to the case discussion and be able to learn more about the diagnosis and differential diagnosis of the presented disease. The project has been very successful in the academic community and has also been used for continued education by general practitioners and medical specialists, besides sharing the knowledge produced in the University. We believe that the democratization of knowledge is a big step towards the improvement of medical teaching.