The invention relates to an imaging arrangement for imaging an object. The imaging arrangement comprises: an X-ray source 5; an X-ray detector 6 arranged to receive X-rays transmitted through the object from the X-ray source 5, wherein the X-ray detector 6 comprises a gaseous-based edge-on direction sensitive line detector provided with an electron avalanche amplifier, and wherein the line detector is adapted to record a line image of radiation as transmitted through the object; and a support device 8 to which the X-ray source 5 and the X-ray detector 6 are attached so as to be arranged on opposite sides of the object, and wherein the support device 8 is arranged to rotate around the object and is also arranged to be movable in relation to the object. The invention also relates to a system comprising such imaging arrangement.