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公开(公告)号：US11158093B2
公开(公告)日：2021-10-26
申请号：US16637453
申请日：2018-08-06
发明人： Kihong Son , Jong Beom Ra , Seokhwan Jang , Kyoung-Yong Lee , Duhgoon Lee , Do Il Kim , Seungeon Kim
摘要： A medical imaging apparatus includes an X-ray source configured to irradiate X-rays to an object; an X-ray detector configured to detect the X-rays radiated from the X-ray source to obtain projection data; and an image processor configured to reconstruct the projection data based on a motion parameter representing movement of at least one of the object, the X-ray source, and the X-ray detector, and to generate a medical image by applying a weighting process to the reconstructed projection data.
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公开(公告)号：US20200226800A1
公开(公告)日：2020-07-16
申请号：US16735882
申请日：2020-01-07
发明人： Huisu YOON , Kyoung-Yong Lee , Jaemoon Jo
摘要： A method of generating a tomographic image includes radiating X-rays onto an object and acquiring X-ray data by detecting the X-rays passed through the object; generating a first tomographic image by reconstructing the X-ray data; identifying, in the first tomographic image, a first region corresponding to a metal particle included in the object; generating a second tomographic image by changing a pixel value of the first region to a predetermined value; acquiring first projection data by performing forward projection on the second tomographic image; generating second projection data by performing interpolation on first signal intensity values corresponding to the first region, based on the first projection data; generating reconstruction data by subtracting the first projection data from the second projection data; generating a third tomographic image based on the reconstruction data; and generating a fourth tomographic image based on the third tomographic image and the first tomographic image.
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公开(公告)号：US20190261940A1
公开(公告)日：2019-08-29
申请号：US16285502
申请日：2019-02-26
发明人： Kihong SON , Kyoung-Yong Lee , Duhgoon Lee , Wooyoung Jang , Jaemoon Jo
摘要： A method and apparatus correct a computed tomography (CT) image with motion artifacts. The method of correcting a CT image may include: obtaining a reconstruction image of an object by reconstructing an X-ray projection image; measuring a parameter value related to motion artifacts that occur due to movement of the object in at least one of the X-ray projection image or the reconstruction image; calculating a correction possibility for the reconstruction image based on the measured parameter value; and determining whether to perform correction on the reconstruction image based on the calculated correction possibility.
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