On the phase and resolution of X-ray imaging

• Main Authors: Shih-Hung Wang, 汪士閎
• Other Authors: 錢凡之
• Format: Others
• Language: zh-TW
• Published: 2009
• Online Access: http://ndltd.ncl.edu.tw/handle/86248991949158542908

碩士 === 淡江大學 === 物理學系碩士班 === 97 === This thesis bases on the common X-ray sources to capture and investigate a series of X-ray images and X-ray phase contrast images. In the part of images resolution , we could get the best condition of experiment through the changing material and size of pinhole, and also adjusting the magnification and the spatial coherence length. We applied the best condition of experiment to observe and compare the bones difference between normal zebra fish and experimental zebra fish which were growing up in 17.5ppm、35ppm and 50ppm caffeine water. From the result, we can find out caffeine will cause bones becoming atrophy, vanished or twist. For enhancing phase contrast images, we analyzed experimental data, and compare with F.Pffeier experiment by using Zernike’s phase contrast method.