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Differential Phase-Contrast (DPC) X-ray Imaging for Security Screening

 

Researchers:

Max Yuen, Research Engineer, Stanford University, apbubble [at ]stanford [dot] edu
Yao-Te Cheng, Engineering Research Associate, Stanford University, ytcheng [at] stanford [dot] edu
Ching-Wei Chang, Engineering Research Associate, Stanford University, chingwei@stanford.edu
Jeffrey P. Wilde, Research Consultant, Stanford University, jpwilde@stanford.edu
Ludwig Galambos, Research Engineer, Stanford University, ludwig@snf.stanford.edu
William Aitkenhead, Research Engineer, Stanford University, waitken@stanford.edu
Chun-Fu Lin, Research Associate, Stanford University, cflin@stanford.edu

Traditional X-ray imaging systems have based on the absorption of material. Unlike such absorption-based X-ray imaging system, recently, the grating based Talbot-Lau interferometer employing a low brilliance and incoherent X-ray source is widely adopted in medical imaging. This implementation is attractive because it does not require a coherent X-ray source nor long propagation distance. The X-ray differential phase contrast imaging system is a three-grating X-ray DPC system, and its optimum design is relatively insensitive to the source spectrum. High energy and wide field of view applications eventually require grating-less sources and detectors.

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