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Development And Characterization Of A High Energy Phase Contrast X Ray Imaging System Prototype
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Book Synopsis Development and Characterization of a High Energy Phase Contrast X-ray Imaging System Prototype by : Molly Eileen Donovan Wong
Download or read book Development and Characterization of a High Energy Phase Contrast X-ray Imaging System Prototype written by Molly Eileen Donovan Wong and published by . This book was released on 2011 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Objective Characterization of In-line Phase Contrast X-ray Imaging Prototype Using a Mid-energy Beam by : Bradley Gregory
Download or read book Objective Characterization of In-line Phase Contrast X-ray Imaging Prototype Using a Mid-energy Beam written by Bradley Gregory and published by . This book was released on 2019 with total page 81 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Characterization and Implementation of an Experimental Phase Contrast X-ray Imaging System by : Yiyang Zhou
Download or read book Characterization and Implementation of an Experimental Phase Contrast X-ray Imaging System written by Yiyang Zhou and published by . This book was released on 2005 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis X-ray Phase-Contrast Imaging Using Near-Field Speckles by : Marie-Christine Zdora
Download or read book X-ray Phase-Contrast Imaging Using Near-Field Speckles written by Marie-Christine Zdora and published by Springer Nature. This book was released on 2021-02-16 with total page 337 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis presents research on novel X-ray imaging methods that improve the study of specimens with small density differences, revealing their inner structure and density distribution. Exploiting the phase shift of X-rays in a material can significantly increase the image contrast compared to conventional absorption imaging. This thesis provides a practical guide to X-ray phase-contrast imaging with a strong focus on X-ray speckle-based imaging, the most recently developed phase-sensitive method. X-ray speckle-based imaging only requires a piece of abrasive paper in addition to the standard X-ray imaging setup. Its simplicity and robustness combined with the compatibility with laboratory X-ray sources, make it an ideal candidate for wide user uptake in a range of fields. An in-depth overview of the state of the art of X-ray speckle-based imaging and its latest developments is given in this thesis. It, furthermore, explores a broad range of applications, from X-ray optics characterisation, to biomedical imaging for 3D virtual histology and geological studies of volcanic rocks, demonstrating is promising potential. Moreover, the speckle-based technique is placed in the context of other phase-sensitive X-ray imaging methods to assist in the choice of a suitable method, hence serving as a guide and reference work for future users.
Book Synopsis Development and Evaluation of a Polychromatic Phase-contrast Radiography Imaging System by : Edwin F. Donnelly
Download or read book Development and Evaluation of a Polychromatic Phase-contrast Radiography Imaging System written by Edwin F. Donnelly and published by . This book was released on 2003 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Performance Evaluation of a Phase Contrast X-ray Imaging Prototype System by : Molly Eileen Donovan
Download or read book Performance Evaluation of a Phase Contrast X-ray Imaging Prototype System written by Molly Eileen Donovan and published by . This book was released on 2007 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Phase-Contrast and Dark-Field Imaging by : Simon Zabler
Download or read book Phase-Contrast and Dark-Field Imaging written by Simon Zabler and published by MDPI. This book was released on 2019-01-08 with total page 147 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a printed edition of the Special Issue "Phase-Contrast and Dark-Field Imaging" that was published in J. Imaging
Book Synopsis Contributions to the Characterization of Grating-based X-ray Phase-contrast Imaging by : Michael Chabior
Download or read book Contributions to the Characterization of Grating-based X-ray Phase-contrast Imaging written by Michael Chabior and published by . This book was released on 2011 with total page 141 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis High Energy X-ray Implementation of Phase Contrast and Dark Field Imaging by : Ian Buchanan
Download or read book High Energy X-ray Implementation of Phase Contrast and Dark Field Imaging written by Ian Buchanan and published by . This book was released on 2020 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Differential Phase Contrast X-ray Imaging System and Components by :
Download or read book Differential Phase Contrast X-ray Imaging System and Components written by and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A differential phase contrast X-ray imaging system includes an X-ray illumination system, a beam splitter arranged in an optical path of the X-ray illumination system, and a detection system arranged in an optical path to detect X-rays after passing through the beam splitter.
Book Synopsis Handbook of X-ray Imaging by : Paolo Russo
Download or read book Handbook of X-ray Imaging written by Paolo Russo and published by CRC Press. This book was released on 2017-12-14 with total page 1477 pages. Available in PDF, EPUB and Kindle. Book excerpt: Containing chapter contributions from over 130 experts, this unique publication is the first handbook dedicated to the physics and technology of X-ray imaging, offering extensive coverage of the field. This highly comprehensive work is edited by one of the world’s leading experts in X-ray imaging physics and technology and has been created with guidance from a Scientific Board containing respected and renowned scientists from around the world. The book's scope includes 2D and 3D X-ray imaging techniques from soft-X-ray to megavoltage energies, including computed tomography, fluoroscopy, dental imaging and small animal imaging, with several chapters dedicated to breast imaging techniques. 2D and 3D industrial imaging is incorporated, including imaging of artworks. Specific attention is dedicated to techniques of phase contrast X-ray imaging. The approach undertaken is one that illustrates the theory as well as the techniques and the devices routinely used in the various fields. Computational aspects are fully covered, including 3D reconstruction algorithms, hard/software phantoms, and computer-aided diagnosis. Theories of image quality are fully illustrated. Historical, radioprotection, radiation dosimetry, quality assurance and educational aspects are also covered. This handbook will be suitable for a very broad audience, including graduate students in medical physics and biomedical engineering; medical physics residents; radiographers; physicists and engineers in the field of imaging and non-destructive industrial testing using X-rays; and scientists interested in understanding and using X-ray imaging techniques. The handbook's editor, Dr. Paolo Russo, has over 30 years’ experience in the academic teaching of medical physics and X-ray imaging research. He has authored several book chapters in the field of X-ray imaging, is Editor-in-Chief of an international scientific journal in medical physics, and has responsibilities in the publication committees of international scientific organizations in medical physics. Features: Comprehensive coverage of the use of X-rays both in medical radiology and industrial testing The first handbook published to be dedicated to the physics and technology of X-rays Handbook edited by world authority, with contributions from experts in each field
Book Synopsis Quantitative Analysis of Contrast to Noise Ratio Using a Phase Contrast X-ray Imaging Prototype by : Muhammad Usman Ghani
Download or read book Quantitative Analysis of Contrast to Noise Ratio Using a Phase Contrast X-ray Imaging Prototype written by Muhammad Usman Ghani and published by . This book was released on 2013 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Development and Evaluation of Two Novel Instruments for X-ray Imaging by : Mi Hye Shin
Download or read book Development and Evaluation of Two Novel Instruments for X-ray Imaging written by Mi Hye Shin and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The evolution of x-ray equipment has been stagnant because of its demanding design requirements, but clinical need for an advanced imaging technique has been continually growing. To contribute to hardware advances in the x-ray imaging devices, we designed and implemented innovative instruments by applying both mechanical and electrical principles. Herein, we explore two essential novel instruments for x-ray imaging: (1) a new electric motor for an MR-compatible x-ray tube and (2) a testing system for a high-energy x-ray detector. Because each imaging modality has different strengths and limitations, we are able to obtain more accurate medical images by combining at least two modalities. A hybrid x-ray/MR imaging system, leveraging the complementary advantages of both x-ray and MR imaging, is ideal for image guidance of catheters, guide wires, and prosthetic devices in real time. However, the performance of conventional x-ray tube motors is degraded when exposed to an external magnetic field, thus we developed and evaluated a new x-ray tube motor that can operate in the presence of the strong magnetic fields of an MRI machine. We further explored simulation models to improve the performance and dynamic characteristics of the new motor. High-energy x-ray imaging used in concert with low-energy x-ray imaging creates clearer and more accurate images. It is necessary to have a thicker scintillating phosphor layer to improve quantum efficiency for high-energy x-rays, but the spreading becomes more severe in that case. To resolve this issue, we can use a thick scintillating layer segmented by other thin layers (a.k.a. pixelated detector). Even though the pixelated detector prototype based on Sawant's design demonstrates relatively high detective quantum efficiency (DQE), both measured DQE and spatial resolution differ from corresponding expectations from theory and simulations. In order for the Monte Carlo method to accurately simulate the imaging performances, the characteristics of the basic pixelated unit must be understood. Therefore, we developed a new instrument to measure both light reflection and transmission distribution within the basic detector unit as a function of material, surface, and angle of incidence. Based on manufacturing procedures and the light distributions of the candidate samples, we also made valuable suggestions for a better, more profitable detector. We expect that our instruments will lead the next generation of diagnostic and therapeutic equipment to produce accurate diagnoses and efficient treatments for various disease states.
Book Synopsis Research Proposal on Prototype Development of a Compact, Pulsed Hard X-ray Source for Medical Imaging and Research in Biological and Material Sciences by :
Download or read book Research Proposal on Prototype Development of a Compact, Pulsed Hard X-ray Source for Medical Imaging and Research in Biological and Material Sciences written by and published by . This book was released on 2000 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this document was to develop a source of pulsed, tunable, monochromatic x-rays using an RF accelerator and terawatt laser for use in medical imaging and treatment. The prototype development is essentially complete and the accelerator and laser are under construction. Delivery of both systems is scheduled for August 2000. System commissioning is scheduled for September 2000. Applications research has produced three-dimensional CT images of animals at resolutions between 35 and 50 microns using monochromatized fan beam geometries. Currently under investigation is comparison of standard mammography with high resolution, two and three-dimension monochromatic plain film and phase contrast imaging.
Download or read book X-ray Phase Contrast Imaging written by and published by . This book was released on 2012 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt: Interest in phase sensitive x-ray imaging techniques has grown rapidly in recent years. Numerous techniques have been demonstrated to measure the phase shift of x-rays as they pass through matter. One such method, grating-based interferometry, has shown the most potential for clinical use. This dissertation continues our group's efforts at characterizing the Talbot-Lau interferometer, with the overall goal of determining the clinical utility of the system. This work first covers the basics of x-ray phase contrast imaging with a grating interferometer. Phase contrast imaging with this method has the advantage over conventional absorption imaging in that it allows for the simultaneous measurement of multiple contrast mechanisms. This multi-contrast imaging modality has the potential to improve the diagnostic capabilities of traditional imaging systems. It has unique noise properties that allow it to move to higher spatial resolution at a lower dose penalty, as well as improved contrast for certain material combinations. However, questions still remain about where such a system would fit in the clinical realm. This dissertation delves into new research demonstrating the effects of beam hardening, improving the phase retrieval technique, determining the best method for grating fabrication, and exploring the impact of the small-angle scattering, or dark field, contrast mechanism. Both traditional beam hardening artifacts and new ones are shown, and their implication for clinical systems is discussed. The improved phase retrieval techniques aim at reducing the temporal requirements for the current acquisition method. While most of them succeed at reducing the time requirements, they also all come with an associated cost to the final image. Along with improved signal extraction, improved grating fabrication is discussed. The design and construction of a new grating fabrication system is detailed, demonstrating its capability of both producing absorption gratings with greater metal deposition depths and using cheaper, alternative absorbers. Finally, the impact of the dark-field contrast mechanism is discussed, highlighting the interplay between high-quality, low-noise phase and dark-field images.
Book Synopsis Influence of Scattered Radiation on the Efficiency of Dual High-energy X-Ray Imaging for Material Characterization by : Gerd-Rüdiger Jaenisch
Download or read book Influence of Scattered Radiation on the Efficiency of Dual High-energy X-Ray Imaging for Material Characterization written by Gerd-Rüdiger Jaenisch and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Development of X-ray Luminescence Detection System and Characterization of X-ray Irradiated Quantum Dots for Image-guided X-ray Photodynamic Therapy by : Byung Hui Yoon
Download or read book Development of X-ray Luminescence Detection System and Characterization of X-ray Irradiated Quantum Dots for Image-guided X-ray Photodynamic Therapy written by Byung Hui Yoon and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
