1. A method of imaging an object using radiation, comprising: obtaining projection data from at least one real detector array, the at least one real detector array obtaining projection data at two or more positions, and having a geometry that is neither equilinear nor equiangular; reprojecting the projection data onto a virtual detector array that has a geometry that is either equilinear or equiangular; and reconstructing the reprojected data from the virtual detector array.