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
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم ابزار دقیق
پیش نمایش صفحه اول مقاله
Two-step phase retrieval method with unknown phase shift on non-absorbtion grating X-ray differential phase contrast imaging system
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
نویسندگان
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