Single-shot grating-based x-ray differential phase contrast imaging with a modified analyzer grating

doi:10.1088/1674-1056/26/10/108701

中国物理B ›› 2017, Vol. 26 ›› Issue (10): 108701-108701.doi: 10.1088/1674-1056/26/10/108701

• INTERDISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY • 上一篇下一篇

Single-shot grating-based x-ray differential phase contrast imaging with a modified analyzer grating

Chen-Xi Wei(卫晨希), Zhao Wu(吴朝), Faiz Wali, Wen-Bin Wei(魏文彬), Yuan Bao(鲍园), Rong-Hui Luo(骆荣辉), Lei Wang(王磊), Gang Liu(刘刚), Yang-Chao Tian(田扬超)

1. National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, China;
2. Shanghai United Imaging Healthcare Co. Ltd., Shanghai 201807, China

收稿日期:2017-04-25 修回日期:2017-06-06 出版日期:2017-10-05 发布日期:2017-10-05
通讯作者: Zhao Wu, Yang-Chao Tian E-mail:wuzhao@ustc.edu.cn;ychtian@ustc.edu.cn
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos. 11275204, 11475175, and 11405175), the China Postdoctoral Science Foundation (Grant No. 2017M612097), and the Fundamental Research Funds for the Central Universities (Grant No. WK2310000065).

Single-shot grating-based x-ray differential phase contrast imaging with a modified analyzer grating

Chen-Xi Wei(卫晨希)¹, Zhao Wu(吴朝)¹, Faiz Wali¹, Wen-Bin Wei(魏文彬)¹, Yuan Bao(鲍园)², Rong-Hui Luo(骆荣辉)¹, Lei Wang(王磊)¹, Gang Liu(刘刚)¹, Yang-Chao Tian(田扬超)¹

1. National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, China;
2. Shanghai United Imaging Healthcare Co. Ltd., Shanghai 201807, China

Received:2017-04-25 Revised:2017-06-06 Online:2017-10-05 Published:2017-10-05
Contact: Zhao Wu, Yang-Chao Tian E-mail:wuzhao@ustc.edu.cn;ychtian@ustc.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos. 11275204, 11475175, and 11405175), the China Postdoctoral Science Foundation (Grant No. 2017M612097), and the Fundamental Research Funds for the Central Universities (Grant No. WK2310000065).

摘要/Abstract

摘要： X-ray grating interferometer has attracted widely attention in the past years due to its capability in achieving x-ray phase contrast imaging with low brilliance source. However, the widely used phase stepping information extraction method reduces system stability and prolongs data acquisition time by several times compared with conventional x-ray absorption-based imaging. The mechanical stepping can be avoided by using a staggered grating, but at the cost of low vertical spatial resolution. In this paper, employing a modified staggered grating and the angular signal radiography, we proposed a single-shot grating-based x-ray differential phase contrast imaging with decent vertical spatial resolution. The theoretical framework was deduced and proved by numerical experiments. Absorption, phase, and scattering computed tomography can be performed without phase stepping. Therefore, we believe this fast and highly stable imaging method with decent resolution would be widely applied in x-ray grating-based phase contrast imaging.

关键词: x-ray phase contrast imaging, single-shot, decent resolution, staggered grating, computed tomography

Abstract: X-ray grating interferometer has attracted widely attention in the past years due to its capability in achieving x-ray phase contrast imaging with low brilliance source. However, the widely used phase stepping information extraction method reduces system stability and prolongs data acquisition time by several times compared with conventional x-ray absorption-based imaging. The mechanical stepping can be avoided by using a staggered grating, but at the cost of low vertical spatial resolution. In this paper, employing a modified staggered grating and the angular signal radiography, we proposed a single-shot grating-based x-ray differential phase contrast imaging with decent vertical spatial resolution. The theoretical framework was deduced and proved by numerical experiments. Absorption, phase, and scattering computed tomography can be performed without phase stepping. Therefore, we believe this fast and highly stable imaging method with decent resolution would be widely applied in x-ray grating-based phase contrast imaging.

Key words: x-ray phase contrast imaging, single-shot, decent resolution, staggered grating, computed tomography

中图分类号: (X-ray imaging)

87.59.-e

42.30.Rx (Phase retrieval) 87.57.Q- (Computed tomography) 41.50.+h (X-ray beams and x-ray optics)

卫晨希, 吴朝, 魏文彬, 鲍园, 骆荣辉, 王磊, 刘刚, 田扬超. Single-shot grating-based x-ray differential phase contrast imaging with a modified analyzer grating[J]. 中国物理B, 2017, 26(10): 108701-108701.

Chen-Xi Wei(卫晨希), Zhao Wu(吴朝), Faiz Wali, Wen-Bin Wei(魏文彬), Yuan Bao(鲍园), Rong-Hui Luo(骆荣辉), Lei Wang(王磊), Gang Liu(刘刚), Yang-Chao Tian(田扬超). Single-shot grating-based x-ray differential phase contrast imaging with a modified analyzer grating[J]. Chin. Phys. B, 2017, 26(10): 108701-108701.

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Single-shot grating-based x-ray differential phase contrast imaging with a modified analyzer grating

Single-shot grating-based x-ray differential phase contrast imaging with a modified analyzer grating

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