Predicting fringe visibility in dual-phase grating interferometry with polychromatic x-ray sources.

Predicting fringe visibility in dual-phase grating interferometry with polychromatic x-ray sources.
J Xray Sci Technol. 2020 Oct 07;:
Authors: Yan A, Wu X, Liu H
Abstract
Dual phase grating X-ray interferometry is radiation dose-efficient as compared to common Talbot-Lau grating interferometry. The authors developed a general quantitative theory to predict the fringe visibility in dual-phase grating x-ray interferometry with polychromatic x-ray sources. The derived formulas are applicable to setups with phase gratings of any phase modulation and with either monochromatic or polychromatic x-rays. Numerical simulations are presented to validate the derived formulas. The theory provides useful tools for design optimization of dual-phase grating x-ray interferometers.
PMID: 33044224 [PubMed - as supplied by publisher]

Source: Journal of X-Ray Science and Technology - October 14, 2020 Category: Radiology Tags: J Xray Sci Technol Source Type: research