Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 8 of 8 for “"Tomographic Image Reconstruction"”.
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Development of Spect and Ct Tomographic Image Reconstruction
… the advancement of statistically-based iterative reconstruction algorithms and protocols for both SPECT and micro CT data. Major contributions of this work to SPECT reconstruction include formulation and implementation of fully three-dimensional voxel-based system matrix in parallel-beam, …
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TOMOGRAPHIC IMAGE RECONSTRUCTION: IMPLEMENTATION, OPTIMIZATION AND COMPARISON IN DIGITAL BREAST TOMOSYNTHESIS
… breast cancer detection by providing decent image quality with fast scan and low radiation dose. DBT system acquires a limited number of noisy 2D projections over a limited angular range and then mathematically reconstructs a 3D breast. 3D reconstruction is faced with the challenges of …
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Effects of Tomographic Image Reconstruction Parameters on Explosives Detection System Performance
Made available in DSpace on 2017-07-06T18:48:43Z (GMT). No. of bitstreams: 3 Humm_Paul_G_MS.pdf: 34070228 bytes, checksum: 084e7a2e24c30d8b43aa4516cb3ee7ab (MD5) Humm_Paul_G_MS_ABS.pdf: 527604 bytes, checksum: cbb92c87a7fda510847333f867d45322 (MD5) license.txt: 4813 bytes, checksum: …
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Tomographic Image Reconstruction via a Hankel Transform Approach and a Low-Noise Digital Filter Structure (Processing, Fourier-Bussel, Roundoff Errors)
We considered two independent problems.
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Design and applications of cold-cathode X-ray imaging systems
… in the x-ray domain. This includes time-based image acquisition techniques, such as elastography and photon-counting measurements. In this dissertation, I discuss (1) the development of two novel types of cold-cathode x-ray sources: an ultraviolet photocathode-based source, and a silicon field …
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Modeling and characterization of a monoenergetic gamma-ray imaging system for active interrogation applications
… a container while increasing penetration and image contrast. In this work, imaging beams are tested for beam penetration, dose, and scatter within the container. It is found that higher energy beams scatter less widely, and can offer dose reductions to the cargo on the order of 40-60% while …
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Attenuation Field Estimation Using Radio Tomography
Radio Tomographic imaging (RTI) is an exciting new field that utilizes a sensor network of a large number of relatively simple radio nodes for inverse imaging, utilizing similar mathematical algorithms to those used in medical imaging. Previous work in this field has almost exclusively focused on …
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C-ARM TOMOGRAPHIC IMAGING TECHNIQUE FOR DETECTION OF KIDNEY STONES
… (CT) provides detailed cross-sectional images as well as 3D structure of kidney from moving the x-ray beam in a circle around the body. However, the risk of CT scans of the kidney is relatively higher exposure to radiation which is more than regular x-rays. C-arm technique is a new x-ray …