Evaluation of an In-line Phase-Contrast and Phase Shift Digital Tomosynthesis System
Hammonds, Jeffrey Clay
:
2013-07-30
Abstract
In the first part of this dissertation, I look at (1) the possibility of using a conventional x-ray source for phase-contrast digital tomosynthesis, (2) that the reconstructed tomosynthesis images demonstrate and retain the edge enhancement as compared to planar phase-contrast radiographs, and (3) tomosynthesis improves object contrast by reducing the effects of superimposed structures. In the second part of the dissertation, I look at the experimental factors required to distinguish between aluminum and aluminum oxide using an x-ray imaging system. This x-ray imaging system will incorporate elements of attenuation radiography, phase-contrast radiography and phase-contrast digital tomosynthesis. Finally, for the third part of the dissertation, I (1) demonstrate laboratory measurements of phase shift images derived from in-line phase-contrast radiographs using the Attenuation-Partition Based Algorithm (APBA), 2) verify that the APBA reconstructed images obey the linearity principle, and 3) reconstruct tomosynthesis phase shift images from a collection of angularly-sampled planar phase shift images.
Files in this item
This item appears in the following collection(s):
Related items
Showing items related by title, author, creator and subject.
-
Peng, Yun (2007-12-07)Department: Chemical EngineeringDEVELOPMENT AND APPLICATIONS OF A HETERO-BASED STATISTICAL ASSOCIATING FLUID THEORY <P> YUN PENG <P> Dissertation under the direction of Professor Clare McCabe <P> Understanding the thermodynamic properties of chemical ...
-
McGahan, Christina Lynn (2017-03-28)Department: PhysicsThe focus of this dissertation is the interaction of gold (Au) plasmonic structures and the phase change material vanadium dioxide (VO2). Vanadium dioxide modifies the local surface plasmon resonance of an Au nanoparticles ...
-
Baker, Courtney E.; Moore-Lotridge, Stephanie N.; Hysong, Alexander A.; Posey, Samuel L.; Robinette, J. Patton; Blum, Deke M.; Benvenuti, Michael A.; Cole, Heather A.; Egawa, Satoru; Okawa, Atsushi; Saito, Masanori; McCarthy, Jason R.; Nyman, Jeffry S.; Yuasa, Masato; Schoenecker, Jonathan G. (2018-12-29)Bone fractures create five problems that must be resolved: bleeding, risk of infection, hypoxia, disproportionate strain, and inability to bear weight. There have been enormous advancements in our understanding of the ...