公开(公告)号：US20180068467A1

公开(公告)日：2018-03-08

申请号：US15558053

申请日：2016-03-21

Applicant: RENSSELAER POLYTECHNIC INSTITUTE

Inventor： Ge Wang ,  Mianyi Chen ,  Yan Xi ,  Wenxiang Cong

IPC: G06T11/00 ,  A61B6/00 ,  A61B6/03

CPC classification number: G06T11/005 ,  A61B6/032 ,  A61B6/5205 ,  A61B6/582 ,  G06T11/006 ,  G06T2207/10116 ,  G06T2207/20 ,  G06T2211/412 ,  G06T2211/424

Abstract: Systems and methods for geometric calibration and image reconstruction in computed tomography (CT) scanning using iterative reconstruction algorithms are provided. An iterative reconstruction algorithm can be used to reconstruct an improved image, and then the improved image can be used to adjust inaccurate parameters by using a Locally Linear Embedding (LLE) method. Adjusted parameters can then be used to reconstruct new images, which can then be used to further adjust the parameters. The steps of this iterative process can be repeated until a quality threshold is met.