1. A radiological image detection system capable of cooperating with a scanning X-ray generator ( 10 ) designed to produce X-ray radiation ( 1 ) scanning a surface ( 2 ) to be imaged, this X-ray radiation ( 1 ) irradiating, portion ( 2 ′) after portion, the surface ( 2 ) to be imaged, the X-ray radiation from a portion ( 2 ′) carrying a radiological image of said portion, characterized in that it comprises an image sensor ( 22, 52 ) which is stationary with respect to the scanning and which is dimensioned so as to be able to acquire an image of the entire surface ( 2 ) to be imaged by the X-ray radiation from the portions ( 2 ′), the detection system in addition comprising means for electronically limiting, at a given time, the acquisition of the image sensor ( 22, 52 ) to an area corresponding to the irradiated portion ( 2 ′) at that time, these limitation means acting in synchronism with the scanning and in geometrical correspondence with the irradiated portion ( 2 ′).