Analytic signal extraction approach based on 2D Grating Interferometer and systematic comparison between 2D GI and 1D case

被引：1

作者：

Ju, Z. ^{[1
]}

Wang, Y. ^{[1
]}

Li, P. ^{[1
]}

Zhu, Z. ^{[1
]}

Zhang, K. ^{[1
]}

Huang, W. ^{[1
]}

Yuan, Q. ^{[1
]}

Wu, Z. ^{[2
]}

Zhu, P. ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst High Energy Phys, Yuquan Rd, Beijing, Peoples R China

[2] Univ Sci & Technol China, Natl Synchrotron Radiat Lab, Hefei 230026, Peoples R China

来源：

JOURNAL OF INSTRUMENTATION | 2016年 / 11卷

基金：

中国国家自然科学基金;

关键词：

Interferometry; Image reconstruction in medical imaging; Medical-image reconstruction methods and algorithms; computer-aided diagnosis; HARD X-RAYS; TALBOT INTERFEROMETRY;

D O I：

10.1088/1748-0221/11/03/C03031

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

X-ray imaging method based on 2D grating interferometer was proposed and studied recently, to overcome the limitations in signal extraction and phase retrieval when using 1D grating interferometer. In this paper, the concept of angle-signal response function is proposed, and different surfaces of different 2D setups under the condition of parallel coherent light are calculated and depicted with Matlab. Based on this concept, performance of 2D grating interferometer is systematically analyzed and an analytic 2D signal extraction approach is theoretically proposed. Besides, signal extraction, phase retrieval and feasibility of using conventional source are also briefly discussed and compared between 2D grating interferometer and 1D case.

引用

页数：13

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