In line X-ray phase contrast micro-computed tomography(IL-XPCT),which can be implemented at third generation synchrotron radiation sources or by using a micro-focus X-ray tube,is a powerful technique for non-destructive,high-resolution investigations of a broad variety of materials.At the Shanghai Synchrotron Radiation Facility(SSRF),the X-ray Imaging and Biomedical Applications Beamline was built and started regular user operation in May 2009.Both qualitative(without phase retrieval) and quantitative(with phase retrieval) three-dimensional IL-XPCT experimental techniques have been established at the beamline.IL-XPCT experiments of a test sample(plastic pipes) used to evaluate the technique,and of a biological sample(locust) at the beamline are reported.Two series of images,qualitative and quantitative,including tomographic slices and three-dimensional rendering images were obtained.In qualitative images,there is a strong edge-enhancement which leads to very clear sample contours,while in quantitative images,the edge-enhancement fades but quantitative measurement of sample's phase information could be achieved.The experiments demonstrate that the combination of qualitative and quantitative images is useful for biological sample studies.
X-ray fluorescence CT is a non-destructive technique for detecting elemental composition and distribution inside a specimen. In this paper, the first experimental results of X-ray fluorescence CT obtained at the SSRF X-ray imaging beamline (BL13W1) are described. The test samples were investigated and the 2D elemental image was reconstructed using a filtered back-projection algorithm. In the sample the element Cd was observed. Up to now, the X-ray fluorescence CT could be carried out at the SSRF X-ray imaging beamline.
