A high-spatial resolution X-ray computed tomography (CT) adopting a sub-pixel shift method has been developed. By calculating sectional images, using plural CT datasets obtained by scanning the X-ray imager, the spatial resolution can be reduced relative to the sub-pixel size of an X-ray imager. Feasibility observations of a biomedical sample were performed using 12-keV monochromatic synchrotron radiation and a photon-counting X-ray imager 174-μm pixels in size. Four CT measurements were performed to obtain datasets at different positions of the X-ray imager. Fine sectional images were obtained successfully, and the spatial resolution was estimated as 80-μm, which corresponds to just under half the pixel size of the imager. In addition, a fine 3D image was also obtained by scanning the imager two-dimensionally.
Feasibility study of a high-spatial resolution x-ray computed tomography using sub-pixel shift method
Akio Yoneyama, Rika Baba, Kazushi Sumitani, Yasuharu Hirai; Feasibility study of a high-spatial resolution x-ray computed tomography using sub-pixel shift method. Appl. Phys. Lett. 23 February 2015; 106 (8): 084102. https://doi.org/10.1063/1.4913615
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