Disclosed is a radiation protection screen for protecting an operator from ionizing radiation, which screen includes a front partition structure that is made of one or more radiation protection materials and a side partition structure that is made of one or more radiation protection materials, the partitions being joined together at a vertical or substantially vertical corner border, and which screen includes feet that are equipped with wheels that rest on the ground. Furthermore, according to the invention, this screen is arranged such that the front partition structure includes a lower portion and an upper portion that may be moved with respect to each other, the upper portion of the front partition structure being mounted so as to be able to pivot in the region of the corner border, about a vertical or substantially vertical pivoting axis.