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 6 of 6 for “"Optical Computed Tomography"”.
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Cone Beam Optical Computed Tomography-Based Gel Dosimetry
… careful development of easily accessible, fast optical readout tools such as cone beam optical computed tomography (CT) in combination with stable and reliable low-toxicity gel dosimeters is one key step in this process. In this thesis, the performance capabilities and limitations of the two …
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Optimization of optical computed tomography techniques for the synthesis of particle aggregate models
… combination of 2-D projections. Furthermore, optical tomography methods using the Algebraic Reconstruction Technique (ART) algorithm has proved capable of synthesizing 3-D shapes from 2-D projections, with accuracy comparable to that obtained by an X-ray microtomograph (the "gold" …
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An optical computed tomography scanner for three dimensional gel dosimetry of radiotherapy dose distributions
… for more than 3 decades. Gel dosimetry with optical computed tomography (CT) scanning using visible light wavelengths has been under investigation and development for much of this time. A lack of clinical uptake of the systems developed to date suggests that there are deficiencies or …
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Application and Development of Algebraic Reconstruction Algorithms for High Dose Rate Brachytherapy Gel Dosimetry with Optical Computed Tomography Readout
… brachytherapy. Radiochromic gel dosimeters with optical computed tomography (CT) readout would provide such a dosimeter, but the insertion of brachytherapy catheters into the gel cause streak artifacts in the reconstructed dose distributions, ruining the dosimeter’s accuracy. The objective of …
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Application of Optical CT to Estimate the Mass of Macroalgae in a Tank of Water
… a mass estimation system for macroalgae using optical computed tomography. The system consists of a table with a fixed camera and backlighting, which rotates around a container of macroalgae to collect images from various points. The images capture the translucency along various light paths …
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Evaluation of Polymer Gel Dosimeters For Measurements of Dose and Let In Proton Beams
<p>This project assessed the effectiveness of polymer gel dosimeters as tools for measuring the dose deposited by and LET of a proton beam. A total of three BANG® dosimeter formulations were evaluated: BANG®-3-Pro-2 BANGkits™ for dose measurement and two BANG®-3 variants, the LET-Baseline and …