US 12,467,883 B2
X-ray phase imaging apparatus and display method of preview image in X-ray phase imaging apparatus
Kana Kojima, Kyoto (JP); Yuto Maeda, Kyoto (JP); and Takahiro Doki, Kyoto (JP)
Assigned to Shimadzu Corporation, Kyoto (JP)
Filed by Shimadzu Corporation, Kyoto (JP)
Filed on Jul. 20, 2023, as Appl. No. 18/355,557.
Claims priority of application No. 2022-151966 (JP), filed on Sep. 22, 2022.
Prior Publication US 2024/0102945 A1, Mar. 28, 2024
Int. Cl. G01N 23/041 (2018.01); G01N 23/046 (2018.01)
CPC G01N 23/041 (2018.02) [G01N 23/046 (2013.01); G01N 2223/1016 (2013.01); G01N 2223/309 (2013.01); G01N 2223/32 (2013.01); G01N 2223/401 (2013.01); G01N 2223/408 (2013.01); G01N 2223/413 (2013.01); G01N 2223/419 (2013.01); G01N 2223/426 (2013.01); G01N 2223/615 (2013.01); G01N 2223/646 (2013.01)] 10 Claims
OG exemplary drawing
 
1. An X-ray phase imaging apparatus comprising:
an X-ray source;
a detector configured to detect X-rays radiated from the X-ray source;
a plurality of gratings arranged between the X-ray source and the detector;
a rotation mechanism configured to rotate the plurality of gratings and a subject relative to each other in a plane orthogonal to an optical axis direction of the X-rays;
an image processor configured to generate a phase contrast image based on a detection signal generated by the X-ray source and the detector, and to generate a preview image based on the detection signal generated by the X-ray source and the detector prior to capture of the phase contrast image; and
a controller configured to control function of displaying on a display the preview image generated by the image processor, and function of discriminatively displaying on the display an image coverage area for the phase contrast image that is associated with a relative rotation angle between the plurality of gratings and the subject.
 
10. A display method of a preview image in an X-ray phase imaging apparatus including an X-ray source, a detector and a plurality of gratings, the method comprising:
a step of generating a preview image based on a detection signal generated by the X-ray source and the detector prior to capture of a phase contrast image;
a step of displaying the preview image on a display; and
a step of discriminatively displaying on the display in the preview image an image coverage area for the phase contrast image that is associated with a relative rotation angle between the plurality of gratings and a subject.