Patent ID: 9526467
Filing Date: 2016-12-27
CPC Classification: A61B,G06T

Claim Text:
1. A radiation imaging apparatus comprising, an X-ray source configured to irradiate a subject with X-rays, a detector configured to detect the X-rays, a measuring processor configured to relatively move the X-ray source and the detector and obtain a measured image, and an image processor configured to apply an arithmetic processing to the measured image to obtain an image, wherein, the image processor comprises, a converter to convert the measured image into a rotationally measured image acquired within a predetermined rotation angle range when the X-ray source and the detector move rotationally along concentric circular paths, and a reconstructor configured to apply a weight responsive to a measurement angle, to the rotationally measured image, perform a reconstruction operation, and obtain a reconstructed image, wherein, the predetermined rotation angle range for acquiring the rotationally measured image includes at least one unit rotation angle range for sequentially acquiring the rotationally measured images, the unit rotation angle range is less than 180 degrees, and the weight provides the reconstructed image obtained from the rotationally measured images, with intensity variation equivalent to the intensity variation of the reconstructed image obtained from a measurement using the rotation angle range of 180 degrees.