HIGH ENERGY GRATING TECHNIQUES

摘要

Imaging techniques that may be used in applications such as differential phase contrast imaging are disclosed that include, for example, configuring a beam source and a beam detector such that a beam connects the two, positioning an object, a phase grating and an analyzer grating in the beam path, producing multiple data sets based on various analyzer grating positions, and conducting a regression analysis using a predetermined function having a set of fitting coefficients to establish those fitting coefficients. In those techniques, the fitting coefficients may be used to characterize a set of interference properties associated with the object.

主权项

1. An imaging technique comprising:
a. providing a beam source; b. providing a beam detector; c. configuring the beam source and the beam detector such that a beam path connects the beam source and the beam detector; d. positioning an object in the beam path; e. positioning a phase grating in the beam path; f. positioning an analyzer grating in a first position in the beam path; g. projecting a first beam along the beam path thereby producing a first data set; h. moving the analyzer grating from the first position to a second position; i. projecting a second beam along the beam path thereby producing a second data set; j. moving the analyzer grating from the second position to a third position; k. projecting a third beam along the beam path thereby producing a third data set; l. conducting a regression analysis fitting pixel data from a group of data sets comprising the first data set, the second data set and the third data set to a predetermined function to establish a set of fitting coefficients; m. wherein the fitting coefficients characterize a set of interference properties associated with the object; n. wherein the predetermined function is dependent on the analyzer grating position; and o. wherein the predetermined function contains sinusoidal functions.