Most developments where usually executed closely after reunions with the radiological experts who often proposed pragmatic changes to the tool after themselves using it. The main developments where however generated after the three examination sessions as it gave us time to envision what to do better. In order to minimize reunions, the development team tried, through multiple brainstorming sessions, as much as possible to foresee and develop other functionalities that might ease the future tool's useability and efficiency.

Basing the IntRad quiz system on BolinOS has offered many possibilities. Not only was the users and groups management possibilities already taken care of, but many other platform-inherent functions where readily available. The authoring history, user tracking, backups, graphical looks, image manipulation, CD ROM or USB key content creation, ... where offered by tools already included in the BolinOS package, we only needed to fine-tune these to our specific needs, not redevelop from scratch.

The previous team charged of the examinations is still composed of expert professional radiologists from all parts of Switzerland (to discuss, choose radiological cases, and decide of the questions and multiple-choice answers), secretaries (to coordinate, type the questions, organize translations, make sure the question leaflets used during the exams are well printed, and organize the examination dates), photographers (to scan the non-digitized films to be used when necessary). The experts meet a few times during the year in order to decide what questions and images are best, and to review the whole examination before the real date.

The team of computer specialists joined, and varied from one to three individuals during the three past years, some working on a punctual basis for the project others in continuity. Their task included development of the tool, user support, debugging and documentation creation.

The means for new infrastructure was scarce, therefore the use of existing resources seemed the coherent choice. Using Web standards for display and interface design, developing further our open source content management and applicative platform BolinOS, having it run on the existing Internet servers of the Radiological Department of the Geneva University Hospitals, the first version of the application was built. The use of this open source software foundation seemed to be the best way to minimize cost, have access to many useful multimedia functionalities, high level of system security and stability, while preserving us for future free use here and in other academic infrastructures.

As a standard approach, one we use for the development of all our BolinOS-based applications, the tests and developments of client and server side applications where ran on Linux, MacOS X (BSD Unix), Windows, and Solaris machines, with recent installations of the open source Apache Web server, MySQL database, and PHP scripting language. This is also what we considered a minimum requirement for future operating system independance.