1. An automated method for analyzing the photometric calibration and image quality performance characteristics of a storage phosphor reader comprising the steps of: exposing to x-rays a storage phosphor through a lead mask test target having a plurality of calibrated density regions useful in analyzing x-ray image characteristics and storage phosphor reader characteristics; reading said exposed storage phosphor by means of a storage phosphor reader to be calibrated, to produce a digital test target image; and digitally processing said digital test target image to produce analytical results of preselected x-ray image characteristics and storage phosphor reader characteristics.