Abstract
X-ray phase contrast imaging (XPCI) is an emerging imaging modality for industrial inspections and biomedical applications. A polycapillary semilens is utilized in the grating-based XPCI to reduce the imaging time or improve the image quality of the reconstructed images in this work. The proposed system is proved to be effective for improving the contrast-to-noise ratio (CNR) of the reconstructed images compared with using an aperture diaphragm in the system under the same exposure time. The polycapillary semilens concentrates the X-rays on the region of interest (ROI) of the sample, which reduces the unnecessary radiation in other areas.
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