A scanning-based arrangement for obtaining imaging data of an object at high repetition rate comprises a support structure; scanning-based apparatuses fixedly arranged on the support structure and each including (i) a radiation source, and (ii) a radiation detector comprising a stack of line detectors, each being directed towards the radiation source to allow a ray bundle of radiation to enter the line detector; an object table arranged in the radiation path of one of the scanning-based apparatuses; and a device provided for rotating the support structure relative the object table so that the object table will successively be arranged in the radiation path of each of the scanning-based apparatuses, during which rotation each of the line detectors in each of the radiation detectors is adapted to record a plurality of line images of radiation as transmitted through the object.