Shanghai United Imaging Healthcare Co., Ltd.

Shenzhen United Imaging Healthcare Co., Ltd.

Carl Zeiss Microscopy Gmbh

Weiqiang Guo

Michael Goegler

Dajun Wang

Lei Cai

Hexin Wang

Hailing Peng

Jingbo Wang

Shukuan Xu

Xiangyu Hua

Zheng Wan

Luying Qiang

The present disclosure relates to systems and methods for determining rotation angles. The systems may perform the methods to: obtain a rotation speed of a radioactive scanning source in a CT scanner; obtain a plurality of original projection acquisition times corresponding to a plurality of projection samples, the plurality of projection samples being associated with rotation of the radioactive scanning source; determine a plurality of original rotation angles corresponding to the plurality of projection samples based on the plurality of original projection acquisition times and the rotation speed of the radioactive scanning source; and determine a plurality of modified rotation angles corresponding to the plurality of projection samples by modifying the plurality of original rotation angles.

Systems and methods for determining rotation angles

A system and method for CT image reconstruction are provided. The method may include: obtaining raw data set related to an object; generating a first image set based on the raw data set, wherein the first image set includes a first full quality image and a first max field of view image; generating one or more reference images based on the first max field of view image; generating a first bone information image based on the one or more reference images; generating a second image set based on the raw data set, wherein the second image set includes a second full quality image; generating a second bone information image based on the one or more reference images; correcting hardening beam artifact of the second full quality image based on the second bone information image to generate a hardening beam artifact corrected image.

System and method for removing hard tissue in CT image

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Shanghai, China

Weiqiang Guo