A radiographic imaging assembly comprises a symmetric radiographic silver
halide film has an overall system speed of at least 1100 to provide
images with improved contrast and sharpness and reduced fog. The imaging
assembly includes a symmetric radiographic film having a speed of at
least 700 that includes at least two silver halide emulsions on each side
of the support that comprise tabular silver halide grains. The emulsions
closer to the support comprise a suitable crossover control agent. The
imaging assembly also includes a pair of phosphor intensifying screens
that have an average screen sharpness measurement (SSM) greater than
reference Curve A of FIG. 4. The screens can have a support that includes
a reflective substrate comprising a continuous polyester phase and
microvoids containing inorganic particles dispersed within the polyester
phase.