| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an assessment aid which can be used as a phantom (pseudo-lesion) in the imaging and assessment of digital X-ray video images, and in particular whereby digital X-ray video images in a plurality of X-ray absorption regions having different X-ray absorptivities can be assessed, and an assessment device provided with the assessment aid. <P>SOLUTION: This assessment aid 1 is used in the imaging and assessment of digital X-ray video images, and comprises a fixed plate (plate-shaped body) 24 having a plurality of regions A-C of different X-ray absorptivities, a turntable (displacement body) 4 having a plurality of wires (line members) 511-518 rotatably (displaceably) provided to the fixed plate 24 so as to transect X-rays with which the fixed plate 24 is irradiated, and a drive motor (drive unit) 3 for rotating (displacing) the turntable 4 with respect to the fixed plate 24. Preferably, the fixed plate 24 has different thicknesses and/or constituent materials in the plurality of regions A-C and thereby has different X-ray absorptivities in each of the regions A-C. <P>COPYRIGHT: (C)2013,JPO&INPIT |
