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• W2997704414 abstract "Attenuation-based x-ray imaging techniques havebeen developed for many decades. One of the state-of-the-artimaging modalities is the cone beam computed tomography (CBCT)that efficiently scans an object and reproduces high-resolutionand isotropic three-dimensional images of it. However,attenuation-based imaging shows a limitation in soft tissueimaging where the absorption contrast is low. Recently severalphase-contrast techniques have been developed that are expected toimprove low-contrast details by using the phase information of theobject. The idea of this thesis is to incorporate thephase-contrast techniques into the current cone beam CT systems tocombine the advantages of both phase-contrast imaging and CBCT.From a practical view of medical imaging, two phase-contrast conebeam CT systems are proposed by using the in-line phase-contrasttechnique and the differential phase-contrast technique,respectively. An in-line phase-contrast image is a Fresneldiffraction pattern in the near field. The image is edge-enhanced,and for soft tissues it is possible to retrieve the phaseprojection from a single in-line image. Therefore, this techniquecan be utilized in either of two methods. The first method is toproduce edge-enhanced reconstruction images of the attenuationcoefficient, and the second is to reconstruct the phasecoefficient using the retrieved phase projections. In order toinvestigate this modality, computer simulations were performed forboth working modes. The results using the in-line phase-contrasttechnique demonstrate superior image quality than that of theattenuation-based technique. A bench-top in-line PC-CBCT system wasdesigned and constructed on top of an optical table, and a simplephantom was imaged and reconstructed using both modes to validatethe principle of the proposed imaging scheme. The grating-baseddifferential phase-contrast technique is able to produce the firstderivative of phase projections using the principle of shearinginterferometer. The proposed differential phase-contrast cone beamCT (DPC-CBCT) system was firstly evaluated using computersimulations as well to investigate its application in volumeof-interest breast imaging. The results demonstrate that compared withattenuationbased CBCT, the DPC-CBCT is able to reveal higherspatial resolution at a similar dose level, and the transversetruncation associated with volume-of-interest (VOI) imaging is notan issue any more. A bench-top DPC-CBCT system was designed andconstructed. The initial results from the system encourage theprinciple of DPCCBCT imaging." @default.
• W2997704414 created "2020-01-10" @default.
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• W2997704414 date "2009-01-01" @default.
• W2997704414 modified "2023-09-25" @default.
• W2997704414 title "Feasibility study of phase-contrast cone beam CT imaging systems" @default.
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• W2997704414 cites W1978760292 @default.
• W2997704414 cites W1979581483 @default.
• W2997704414 cites W1981805294 @default.
• W2997704414 cites W1983843016 @default.
• W2997704414 cites W1983914701 @default.
• W2997704414 cites W1983969827 @default.
• W2997704414 cites W1987460109 @default.
• W2997704414 cites W1989693788 @default.
• W2997704414 cites W1991951294 @default.
• W2997704414 cites W1996074471 @default.
• W2997704414 cites W1996510359 @default.
• W2997704414 cites W1997419076 @default.
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• W2997704414 cites W2008941109 @default.
• W2997704414 cites W2012423155 @default.
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• W2997704414 cites W2017823842 @default.
• W2997704414 cites W2018625671 @default.
• W2997704414 cites W2021614875 @default.
• W2997704414 cites W2025100489 @default.
• W2997704414 cites W2032856395 @default.
• W2997704414 cites W2033437478 @default.
• W2997704414 cites W2039472483 @default.
• W2997704414 cites W2041029854 @default.
• W2997704414 cites W2044779959 @default.
• W2997704414 cites W2045452969 @default.
• W2997704414 cites W2049224600 @default.
• W2997704414 cites W2050565643 @default.
• W2997704414 cites W2051004886 @default.
• W2997704414 cites W2052969504 @default.
• W2997704414 cites W2053331261 @default.
• W2997704414 cites W2054288974 @default.
• W2997704414 cites W2054317799 @default.
• W2997704414 cites W2056327944 @default.
• W2997704414 cites W2056635396 @default.
• W2997704414 cites W2071525675 @default.
• W2997704414 cites W2078481717 @default.
• W2997704414 cites W2079863307 @default.
• W2997704414 cites W2082737320 @default.
• W2997704414 cites W2084265296 @default.
• W2997704414 cites W2087599743 @default.
• W2997704414 cites W2097481030 @default.
• W2997704414 cites W2099077873 @default.
• W2997704414 cites W2106654777 @default.
• W2997704414 cites W2123683167 @default.
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