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Scattered radiation caused by the intraoperative use of mobile image intensifier systems (referred to as “C-arms”) is the main source of radiation exposure for operating room personnel and surgeons. To keep this possibly harmful exposure at a minimum level, a deliberate use of radiation, knowledge about distribution of scattered radiation and appropriate behavior pattern are indispensable. Therefore in several countries knowledge concerning these aspects is taught in mandatory courses on radiation protection. Currently this teaching is typically based on non-interactive didactical methods (texts, pictures and videos). Because of the complexity of the knowledge field this restriction might lead to an insufficient understanding of the facts, an inappropriate behavior and therefore to an avoidable radiation exposure. This paper presents a new software module, which is able to simulate and visualize intraoperative radiation distribution and the resulting dose values for the attending persons within a few seconds (less than 30s). The developed components, which simulate the radiation transport using a graphics processing unit three times faster than comparable approaches, were integrated exemplarily in the computer based C-arm training system virtX. This extended training system improves the teaching through a prompt visual feedback on non-trivial scattered radiation facts in freely adoptable situations.
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