An enhanced X-ray imaging contrast using a grating-based talbot interferometry
Liew, Seaw Jia
Date of Issue2016
School of Electrical and Electronic Engineering
SIMTech, SPRING Singapore and the industry partner, JM Vistec Systems Pte Ltd
We often deal with objects made of low-density materials in various settings, such as soft biological tissues in the medical sciences and manufacturing of food, and low-density polymeric substances in the manufacturing of medical devices and automotive parts. Inspection of low-density materials using the conventional X-ray imaging that is based on the principle of X-ray absorptions often results in a lack of image contrast because these materials do not generate satisfactory absorptioncontrast under the irradiation of typical range of hard X-rays. Furthermore, in many cases, the objects always come in irregular form of shapes and sizes, this makes the X-ray imaging challenging as different X-ray energies are required to penetrate through different range of object thickness in order to provide a satisfactory visibility of fine defects and structural profiles residing beneath the surface.
DRNTU::Engineering::Electrical and electronic engineering