A system and method for generating CT-type three dimensional imaging information from a conventional C-arm fluoroscope system. For each BS, a diversity set is maintained for the sets of MS. In the handle a S-bow-shaped handle section is arranged between the straight middle section and the fixing end section. The light source controlling portion controls the driving portion based on the position of the aperture blade and a rotation direction. A match is found when the calculated signal-to-noise ratio is above a predetermined threshold value. In these and other ways, embodiments of the invention can provide robust solutions to fraudulent activity, thereby diminishing the effectiveness of the fraudulent activity.