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Title page for ETD etd-07192013-160603


Type of Document Dissertation
Author Hammonds, Jeffrey Clay
URN etd-07192013-160603
Title Evaluation of an In-line Phase-Contrast and Phase Shift Digital Tomosynthesis System
Degree PhD
Department Physics
Advisory Committee
Advisor Name Title
Ronald Price Committee Chair
David Ernst Committee Member
David Pickens Committee Member
Edwin Donnelly Committee Member
Michael Stabin Committee Member
Todd Peterson Committee Member
Keywords
  • phase-contrast
  • phase shift
  • digital tomosynthesis
  • phase retrieval
Date of Defense 2013-06-18
Availability unrestricted
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.
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