The radiological apparatus (1) comprises a patient table (2), an X-ray emitter (3) mounted to an arm (4) and adapted to be moved, an X-ray detector (51) associated with said patient table (2 ), and an electronic control unit (6) adapted to control at least said emitter (3) and said detector (51)； also included in the apparatus (1) are sensors adapted to detect the actual movement of said emitter (3) and at least one actuator adapted to automatically move said detector (51) at least in a horizontal direction (D1, D2)； said electronic control unit (6) is connected to said sensors and said at least one actuator, and is adapted to obtain the actual movement of said emitter (3) from said sensors, and consequently to control said at least one actuator so that, during normal use of the apparatus, said detector (51) is automatically aligned with said emitter (3) before starting capturing a radiological image or a plurality of radiological images.
