| 发明名称 |
IMAGE PROCESSING APPARATUS, RADIATION IMAGING SYSTEM, CONTROL METHOD, AND STORAGE MEDIUM |
| 摘要 |
There is provided an image processing apparatus for reconstructing a tomographic image of a subject based on a plurality of projection images obtained by detecting radiation emitted from a plurality of different positions. The image processing apparatus reconstructs a first tomographic image from the plurality of projection images, extracts a fixed pattern occurring in the first tomographic image due to a radiation detector, and forms a second tomographic image by updating the first tomographic image using a value concerning intensity of the fixed pattern as a regularization term. The image processing apparatus outputs, as the tomographic image of the subject, the second tomographic image obtained by the update. |
| 申请公布号 |
US2016151035(A1) |
申请公布日期 |
2016.06.02 |
| 申请号 |
US201514941773 |
申请日期 |
2015.11.16 |
| 申请人 |
CANON KABUSHIKI KAISHA |
发明人 |
Noda Takeshi |
| 分类号 |
A61B6/00;A61B6/02 |
主分类号 |
A61B6/00 |
| 代理机构 |
|
代理人 |
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| 主权项 |
1. An image processing apparatus for reconstructing a tomographic image of a subject based on a plurality of projection images obtained by detecting, by a detection unit, radiation emitted from a plurality of different positions, comprising:
a reconstruction unit configured to reconstruct a first tomographic image from the plurality of projection images; an extraction unit configured to extract a fixed pattern occurring in the first tomographic image due to the detection unit; an update unit configured to form a second tomographic image by updating the first tomographic image using a value concerning intensity of the fixed pattern as a regularization term; and an output unit configured to output, as the tomographic image of the subject, the second tomographic image obtained by the update. |
| 地址 |
Tokyo JP |
