| 发明名称 |
METHOD FOR IDENTIFYING AND PROCESSING DETECTOR POLARIZATION IN PHOTON-COUNTING SPECTRAL X-RAY DETECTORS |
| 摘要 |
A computed tomography (CT) apparatus and a method for identifying photon-counting detectors that are polarized due to high flux, thereby rendering the photon-counting detector inoperable. The data obtained from the photon-counting detectors that are determined to be polarized is skipped during an image pre-reconstruction phase. The data is further assigned a weight of zero during an image reconstruction phase in order to avoid imaging artifacts in the reconstructed CT image. |
| 申请公布号 |
US2016242725(A1) |
申请公布日期 |
2016.08.25 |
| 申请号 |
US201514631519 |
申请日期 |
2015.02.25 |
| 申请人 |
KABUSHIKI KAISHA TOSHIBA ;TOSHIBA MEDICAL SYSTEMS CORPORATION |
发明人 |
WANG Xiaolan;Zhang Yuexing;Zou Yu |
| 分类号 |
A61B6/00;G06T11/00;A61B6/03 |
主分类号 |
A61B6/00 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A computed-tomography (CT) apparatus, comprising:
a plurality of stationary photon-counting detectors configured to capture incident X-ray photons emitted from an X-ray source to obtain projection data; and a processing circuit configured to
determine which photon-counting detectors of the plurality of photon-counting detectors were polarized when the projection data was obtained, andassign a weight of zero to the projection data corresponding to the polarized photon-counting detectors during image reconstruction. |
| 地址 |
Tokyo JP |
