X-ray imaging apparatus and control method thereof

A control method of an X-ray image apparatus, the method comprising:

• generating first X-ray beams, and irradiating the first X-ray beams onto an object;
• detecting by a first X-ray detector located adjacent to the object, the first X-ray beams transmitted through the object, dividing the detected first X-ray beams according to a first plurality of energy bands, and generating a first phase contrast image signal for each of the first plurality of energy bands;
• generating second X-ray beams, and irradiating the second X-ray beams onto the object;
• focusing the second X-ray beams transmitted through the object at an X-ray collimator which is spaced apart from the object by a predetermined distance;
• detecting by a second X-ray detector coupled with the X-ray collimator the focused second X-ray beams, dividing the detected second X-ray beams according to a second plurality of energy bands, and generating a second phase contrast image signal for each of the second plurality of energy bands;
• and
• creating a phase contrast image and an absorption image of the object based on the first phase contrast image signal generated for each of the first plurality of energy bands and the second phase contrast image signal generated for each of the second plurality of energy bands.

A control method of an X-ray imaging apparatus, the method comprising:

• generating first X-ray beams, and irradiating the first X-ray beams onto an object;
• at a first X-ray detector located adjacent to the object, detecting the first X-ray beams transmitted through the object, and generating a first phase contrast signal based on the detected first X-ray beams;
• generating second X-ray beams, and irradiating the second X-ray beams onto the object;
• at an X-ray collimator which is spaced apart from the object by a predetermined distance, focusing the second X-ray beams transmitted through the object;
• at a second X-ray detector coupled with the X-ray collimator, detecting the focused second X-ray beams, and generating a second phase contrast signal based on the detected second X-ray beams;
• and
• creating a phase contrast image and an absorption image of the object based on the first phase contrast signal and the second phase contrast signal.

An X-ray imaging apparatus comprising:

• an X-ray source configured to generate X-ray beams and configured to irradiate the X-ray beams onto an object;
• a first X-ray detector located adjacent to the object and configured to detect X-ray beams transmitted through the object and configured to generate a first phase contrast signal based on the detected X-ray beams;
• a second X-ray detector located after the first X-ray detector and configured to detect X-ray beams transmitted through the object when the first X-ray detector is moved and configured to generate a second phase contrast signal based on the detected X-ray beams, and
• an image processor configured to create a phase contrast image and an absorption image of the object based on the first phase contrast signal generated by the first X-ray detector and the second phase contrast signal generated by the second X-ray detector.