A computed tomography acquisition method, an imaging system, a computer readable medium provides laterally displacing a radiation detector (204) from a position with centered detector geometry with a centered transverse field of view to a first offset position (212) emitting first radiation by the radiation source (202), detecting the first radiation by the radiation detector (204) and acquiring projection data indicative of the first radiation rotating the support around the rotational axis (214) by 180� emitting second radiation by the radiation source (202), detecting the second radiation by the radiation detector (204) and acquiring projection data indicative of the second radiation displacing the radiation detector (204) from the first offset position to a second offset position (226), with opposite direction and double length of the first displacement (a)
