Design of Next Generation Stationary Digital Breast Tomosynthesis System Public Deposited

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Last Modified
  • March 20, 2019
Creator
  • Phan, Tuyen
    • Affiliation: School of Medicine, UNC/NCSU Joint Department of Biomedical Engineering
Abstract
  • Digital breast tomosynthesis is a three-dimensional mammography technique where scans are acquired at a limited angle and the projections are reconstructed. It overcomes the main limitation of mammography, which is tissue overlap, by providing improved depth resolution. The emerging technology still uses a conventional x-ray source based on thermionic emission that requires rotation of the source to cover the angular range. This thesis presents the design and characterization of a next generation stationary digital breast tomosynthesis system that uses a carbon nanotube-based (CNT-based) multi-pixel x-ray source. The CNT-based x-ray source eliminates the need for rotation of the x-ray tube and allows for higher temporal resolution because the pixels can be switched on instantaneously. The system will be able to operate at 30-60 kV and can be used for quasi-monochromatic imaging at a reasonable scan time in order to increase contrast between tissues of similar attenuation.
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  • In Copyright
Note
  • "... in partial fulfillment of the requirements for the degree of Master of Science in the Department of Biomedical engineering."
Advisor
  • Zhou, Otto
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Place of publication
  • Chapel Hill, NC
Access
  • Open access
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