کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1823558 | 1526434 | 2012 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Two-step phase retrieval method with unknown phase shift on non-absorbtion grating X-ray differential phase contrast imaging system
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موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
ابزار دقیق
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
Conventional phase retrieval methods for X-ray differential phase-contrast imaging are carried out with at least three interferograms. In this contribution, we present a novel two-step phase-shifting algorithm with an arbitrary unknown phase shift between 0 and ππ. Based on the detecting model of a grating interferometer, the unknown phase shifts are extracted by a noniterative algorithm. Then the phase distribution of the detected sample can be further obtained from the retrieval phase shift. This method is experimentally validated based on non-absorbtion grating imaging system and the result verified its effectiveness.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment - Volume 691, 1 November 2012, Pages 86–89
Journal: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment - Volume 691, 1 November 2012, Pages 86–89
نویسندگان
X. Liu, J.C. Guo, Y.H. Lei, Y. Du, H.B. Niu,