EVALUATION AID

摘要

An evaluation aid serves as a phantom (imitation lesion) when a digital X-ray image is taken, and evaluation is then carried out through the digital X-ray image. The evaluation aid can simplify evaluating image qualities of a digital X-ray image for X-ray absorption parts having different X-ray absorption ratios all at once. The evaluation aid contains a substrate (plate-like body) including a plurality of regions having different X-ray absorption ratios for taking a digital X-ray image to carry out evaluation. Step members are provided on the plate-like body so as to correspond to the plurality of regions, respectively, where each step member includes a plurality of subregions having different X-ray absorption ratios. Preferably the thicknesses and/or constituent materials of the plurality of regions of the substrate are different from each other in order to have different X-ray absorption ratios in these regions.

主权项

1. An evaluation aid adapted to be used for taking a digital X-ray image thereof, wherein evaluation is carried out through the digital X-ray image, the evaluation aid comprising:
a plate-like body having a quadrangular shape in a planar view and including a plurality of regions having different X-ray absorption ratios; and wire assemblies provided on the plate-like body so as to correspond to the plurality of regions, respectively, each wire assembly including a plurality of wire rods, wherein the plurality of wire rods included in the each wire assembly are arranged to incline at an angle with respect to one side of the plate-like body.