摘要:
An X-ray image processing device using dual energy (1,2) projection radiography method, wherein the low energy image and the high energy image are subjected to a subtraction (7) processing to output a first image such as a soft tissue X-ray image, and the first image and the low energy image are subjected to another subtraction (8) to output a second image such as a bone X-ray image without deterioration of the X-ray image.
摘要:
Transmission images are obtained by radiating X-rays having two different energy levels onto a subject in one direction, and then transformed into logarithmic images, respectively. From these logarithmic images, a contrast ratio due to the two kinds of X-rays having different energies is obtained. From this contrast ratio, the term relating to the thickness of the subject is eliminated, thereby providing information only relating to the quality of the material. By collating the information with the previously measured data of materials, the material of the subject is identified.