| 发明名称 | Image reconstruction method for differential phase contrast X-ray imaging | ||
| 摘要 | A phase retrieval method for differential phase contrast imaging includes receiving data corresponding to a differential phase image generated from a measured signal. The measured signal corresponds to an X-ray signal detected by a detector after passing through a subject located with a grating arrangement between an X-ray source and the detector. The method further includes generating a phase image corresponding to the integration of the differential phase image. Generating the phase image includes performing an iterative total variation regularized integration in the Fourier domain. | ||
| 申请公布号 | US8989347(B2) | 申请公布日期 | 2015.03.24 |
| 申请号 | US201213719815 | 申请日期 | 2012.12.19 |
| 申请人 | General Electric Company | 发明人 | Sperl Jonathan Immanuel;Beque Dirk Wim Jos |
| 分类号 | G06T7/00;G01N23/04;G06T5/00 | 主分类号 | G06T7/00 |
| 代理机构 | Fletcher Yoder, P.C. | 代理人 | Fletcher Yoder, P.C. |
| 主权项 | 1. A phase retrieval method for differential phase contrast imaging, comprising: receiving data corresponding to a differential phase image generated from a measured signal; wherein the measured signal corresponds to an X-ray signal detected by a detector after passing through a subject located with a grating arrangement between an X-ray source and the detector; and generating a phase image corresponding to the integration of the differential phase image, wherein generating the phase image comprises performing an iterative total variation regularized integration in the Fourier domain; wherein the iterative total variation regularized phase retrieval comprises utilizing a regularization term having frequency dependent weighting function. | ||
| 地址 | Niskayuna NY US | ||