A system for providing baroreflex stimulation comprises a sensor to detect a parameter and provide a signal indicative of the parameter, and a baroreflex stimulator. When it is decided that the radiation imaging apparatus is in a moving state, the operation function of the operating unit for the radiation detector and the imaging unit is limited. With the arrangement, it is not necessary to transfer the data when the data redundancy method is changed from the duplicating to the parity method and the data transfer load is mitigated. The liquid crystal display unit is pivoted to the window frame through a pivot unit so as to be movable relative the window frame between open and closed positions. The hinged bottom lid is adapted to be tilted to open the dust collection container.