Theory and method of dual-energy x-ray grating phase-contrast imaging

Rong Feng^{1, 2, †}, Gao Yan¹, Guo Cui-Juan¹, Xu Wei¹, Xu Wei¹

(a) Phase contrast image using DEPCI system, (b) phase contrast image using Talbot–Lau interferometer, (c) absorption contrast image using DEPCI system, (d) absorption contrast image using Talbot–Lau interferometer, (e) data fitting for the cross-section of solid line in panels (a) and (b), and (f) data fitting for cross-section of dashed line in panels (a) and (b).