MEDICAL IMAGE SYSTEM AND JOINT CARTILAGE STATE SCORE DETERMINATION METHOD

摘要

A medical image system includes an X-ray imaging device with a Talbot or Talbot-Lau interferometer, a reconstructed image generation unit, an extraction unit, a feature value calculation unit and a determination unit. The generation unit generates, among a differential phase image, an absorption image and a small-angle scattering image, at least the differential phase image based on an image signal obtained by the X-ray imaging device imaging a joint part. The extraction unit extracts a joint cartilage region based on the differential phase image. The calculation unit analyzes the joint cartilage region to calculate a feature value indicating a joint cartilage state. The determination unit compares the feature value with a predetermined reference value and determines, based on the comparison result, into which one of predetermined scores of multiple stages the joint cartilage state falls.

主权项

1. A medical image system comprising:
an X-ray imaging device with a Talbot interferometer or Talbot-Lau interferometer; a reconstructed image generation unit which generates, among three reconstructed images of a differential phase image, an absorption image and a small-angle scattering image, at least the differential phase image based on an image signal obtained by the X-ray imaging device imaging a joint part; an extraction unit which extracts a region of a joint cartilage based on the generated differential phase image; a feature value calculation unit which analyzes the extracted region of the joint cartilage so as to calculate a feature value indicating a state of the joint cartilage; and a determination unit which compares the calculated feature value with a predetermined reference value and determines, based on a result of the comparison, into which one of predetermined scores of multiple stages the state of the joint cartilage falls.