1. A radiological image detection system, comprising: a scanning X-ray generator configured to produce X-ray radiation scanning a surface to be imaged, said X-ray radiation successively irradiating a plurality of portions; means for converting said X-ray radiation into a light image; a stationary light image sensor placed behind said means for converting and configured to acquire an image of an entire surface to be imaged from the plurality of portions; electronic shutter means interposed between said means for converting and said stationary light image sensor, said electronic shutter means being configured to limit, at a given time, acquisition of said stationary light image sensor to an area corresponding to an irradiated portion at the given time, and said electronic shutter means being further configured to act in synchronism with the X-ray radiation scanning and in geometrical correspondence with a portion irradiated by said X-ray radiation.