Mr. Keivan Majidi Profile

Keivan Majidi

Research Assistant at Illinois Institute of Technology

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Proceedings Article | 5 September 2014 Paper

Phase contrast imaging using a micro focus x-ray source

Wei Zhou, Keivan Majidi, Jovan Brankov

Proceedings Volume 9207, 92070U (2014) https://doi.org/10.1117/12.2060749

KEYWORDS: Phase contrast, Crystals, X-ray sources, X-ray imaging, Tissues, Monochromators, Germanium, X-rays, Bone, Tungsten

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Phase contrast x-ray imaging, a new technique to increase the imaging contrast for the tissues with close attenuation coefficients, has been studied since mid 1990s. This technique reveals the possibility to show the clear details of the soft tissues and tumors in small scale resolution. A compact and low cost phase contrast imaging system using a conventional x-ray source is described in this paper. Using the conventional x-ray source is of great importance, because it provides the possibility to use the method in hospitals and clinical offices. Simple materials and components are used in the setup to keep the cost in a reasonable and affordable range.Tungsten Kα1 line with the photon energy 59.3 keV was used for imaging. Some of the system design details are discussed. The method that was used to stabilize the system is introduced. A chicken thigh bone tissue sample was used for imaging followed by the image quality, image acquisition time and the potential clinical application discussion. High energy x-ray beam can be used in phase contrast imaging. Therefore the radiation dose to the patients can be greatly decreased compared to the traditional x-ray radiography.

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