Browsing Engineering (Faculty of) by Subject "X-ray"
Now showing items 1-8 of 8
-
a-Si:H-Silicon Hybrid Low Energy X-ray Detector
(University of Waterloo, 2014-09-15)Low energy X-ray (< 20 keV) detection is a key technological requirement in applications such as protein crystallography or diffraction imaging. Silicon based optical cameras based on CCDs or CMOS imaging chips coupled to ... -
Carbon nanotube field emitter array and its application to novel X-ray systems
(University of Waterloo, 2018-06-15)With the emergence of ever more demanding X-ray imaging applications, including radiotherapy, radiography, computed tomography and tomosynthesis, there is a tendency to use field emission (FE) to take the place of thermionic ... -
Design and Fabrication of Carbon Nanotube Array based Field Emission Cathode for X-ray Tube
(University of Waterloo, 2013-07-25)Field emission cathodes have proven themselves to be excellent candidates for some special medical X-ray applications. Spindt cathode and CNT (carbon nanotube) based field emission cathode have been widely studied for many ... -
Design and Optimization of a Stacked Three-Layer X-ray Detector for Multi-Spectral Medical Imaging Applications
(University of Waterloo, 2016-06-16)Dual-Energy (DE) imaging is a powerful technique in x-ray imaging that increases the ability to detect specific materials in a cluttered background, and is used to more accurately visualize anatomical features and diagnose ... -
Device Architectures for Improved Temporal Response with Amorphous Selenium Radiation Detectors
(University of Waterloo, 2019-07-29)Amorphous selenium (a-Se) is a commercially mature direct conversion photoconductor capable of very high spatial resolution that enables the early detection of small and subtle lesions in breast cancer screening and ... -
Grating Technology and System Development for High-Resolution X-Ray Phase-Contrast Imaging
(University of Waterloo, 2023-02-16)X-ray imaging is a workhorse of medical imaging, and in particular, high-resolution X-ray imaging is used in the detection of carcinomas and micro-calcifications in the breast, small fractures, and early stages of cancerous ... -
Hybrid Amorphous Selenium-CMOS Photon-Counting X-ray Imager
(University of Waterloo, 2018-05-23)Many medical imaging modalities, such as mammography and micro-computed tomography, utilize digital X-ray imagers to observe human anatomy. Direct digital X-ray imagers rely on a sensor layer (typically a photoconductor) ... -
Phase Retrieval Methods for Polychromatic Propagation-Based Phase-Contrast X-ray Imaging
(University of Waterloo, 2019-07-18)X-ray imaging, based on conventional attenuation methods, is employed in various industrial, medical and scientific imaging application. Phase-contrast X-ray imaging is an emerging modality that has shown promise to image ...