EVALUATION AID AND EVALUATION DEVICE

摘要

An evaluation aid is used as a phantom (imitation lesion) when a digital X-ray dynamic image thereof is taken and evaluated for image qualities for X-ray absorption parts having different X-ray absorption ratios. The evaluation aid contains a fixed plate (plate-like body) including a plurality of regions having different X-ray absorption ratios; a rotating disk (movable body) having a plurality of wires (wire rods), the rotating disk capable of rotating (moving) with respect to the fixed plate so that the plurality of wires traverse X-ray with which the fixed plate is irradiated; and a driving motor (driving portion) which rotates (moves) the rotating disk with respect to the fixed plate. It is preferred that thicknesses and/or constituent materials of the plurality of regions of the fixed plate are different from each other, so that these regions have die different X-ray absorption ratios.

主权项

1. An evaluation aid adapted to be used for taking a digital X-ray dynamic image thereof, wherein evaluation is carried out through the digital X-ray dynamic image, the comprising:
a plate-like body including a plurality of regions having different X-ray absorption ratios, the plurality of regions provided side by side; at least one movable body having a plurality of wire rods, the movable body capable of moving with respect to the plate-like body so that the plurality of wire rods traverse X-ray with which the plurality of regions of the plate-like body is irradiated; and a driving portion which moves the movable body with respect to the plate-like body. wherein the plurality of wire rods are configured to sequentially pass through the respective regions of the plate-like body in a planar view of the evaluation aid.