A system 10 for imaging is provided. The system 10 includes an x-ray source 14, a detector 16, and a controller 18. The x-ray source 14 is operative to transmit x-rays 20 through a subject 12 while the x-ray source 14 continuously travels along a path 22 defined by a sweep angle. The detector 16 is operative to receive the x-rays 20 after having passed through the subject 12. The controller 18 is operative to: acquire preliminary data 56 regarding the subject 12 via the x-ray source 14 and the detector 16； determine at least one acquisition parameter 60 from the preliminary data 56； and acquire one or more projections 64 of the subject 12 via the x-ray source 14 and the x-ray detector 16 based at least in part on the acquisition parameter 60.
