Chinese Optics Letters, 2012, 10 (12): 121101, Published Online: Sep. 14, 2012
Phase retrieval for hard X-ray computed tomography of samples with hybrid compositions Download: 696次
110.6960 Tomography 100.5070 Phase retrieval 170.3010 Image reconstruction techniques 340.7440 X-ray imaging
Abstract
X-ray tomography of samples containing both weakly and strongly absorbing materials are necessary in material and biomedical imaging. Extending the validity of the phase-attenuation duality (PAD) method, the propagation-based phase-contrast computed tomography (PPCT) of a sample with hybrid compositions of both the light and dense components with 60 keV of synchrotron radiation is investigated. The experimental results show that the PAD-based PPCT is effective in imaging both the weakly and strongly absorbing components simultaneously. Compared with the direct PPCT technique, the PAD-based PPCT technique demonstrates its excellent capability in material discrimination and characterization. In addition, the PAD-based PPCT exhibits a striking performance on the image contrast enhancement and noise suppression. Therefore, this technique is useful for material and biomedical imaging applications, especially when the radiation dose involved imposes a serious constraint.
Huiqiang Liu, Yuqi Ren, Han Guo, Yanling Xue, Honglan Xie, Tiqiao Xiao, Xizeng Wu. Phase retrieval for hard X-ray computed tomography of samples with hybrid compositions[J]. Chinese Optics Letters, 2012, 10(12): 121101.