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Robust and efficient process for acceptance testing of radiation therapy machines
(University of Missouri--Columbia, 2015)
The current (legacy) paradigm for acceptance testing (AT), commissioning, and ongoing quality assurance (QA) and quality control (QC) of linac and treatment planning systems (TPS) is extremely inefficient requiring substantial ...
Simulation of multiple-component charged aerosol evolution
(University of Missouri--Columbia, 2019)
The study of the nuclear source term requires the computation of aerosol dynamics. Solutions to the aerosol general dynamic equation (GDE) are difficult to obtain by analytical or numerical methods when more realistic ...
Scintillating fiber arrays for in-vivo real-time patient quality assurance for medical linear accelerators
(University of Missouri--Columbia, 2017)
The purpose of this research is to design real-time, in-vivo, transmission scintillating fiber detectors capable of identifying errors in external beam radiation therapy when a fraction of a treatment has been delivered. ...
Sensitivity of plan re-optimizaton to errors in deformable image registration in online adaptive image-guided radiation therapy
(University of Missouri--Columbia, 2016)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT AUTHOR'S REQUEST.] Online adaptive image-guided radiation therapy has been a longstanding topic of interest in the field of radiation oncology due to its unique ability ...
Development of unfolded fast neutron irradation positions at a 16.5 MeV GE PETtrace cyclotron and chronomorphic characterization of radiation damage on polyurethane
(University of Missouri--Columbia, 2018)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT AUTHOR'S REQUEST.] The fast neutron energy flux spectrum was determined at a fluorine-18 ([subscript 18]F) producing cyclotron which is operated at the Missouri University ...
Dosimetry to evaluate the effect of Phosphoromidon on Lu-177-RM2
(University of Missouri--Columbia, 2016)
The human body is comprised of trillions of cells. In the healthy case, human cells divide naturally in a controlled manner in order to replace cells as needed. The process in which the body's cells divide continually in ...
Computation of fission product deposition in aerosols
(University of Missouri--Columbia, 2019)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] High-temperature gas-cooled reactors (HTGRs) generate carbonaceous dust during both normal operations and accidents. The dust particles can be both ...
Standardization and automation for radiotherapy treatment planning system commissioning /
(University of Missouri--Columbia, 2016)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT AUTHOR'S REQUEST.]
Simulating Cherenkov radiation generated by radiotherapy beams
(University of Missouri--Columbia, 2017)
Cherenkov radiation has had various applications in high-energy physics since its discovery, and this research explores two applications of Cherenkov radiation relating to its presence in media under irradiation by medical ...
Implementation of an in vivo radiochromic film QA procedure
(University of Missouri--Columbia, 2016)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] Advance treatment techniques, such as IMRT and dynamic conformal arc delivery, are novel radiation treatment procedures at the forefront of accurate ...
Design, fabrication and testing of diamond radiation detectors for charged particle and neutron detection /
(University of Missouri--Columbia, 2017)
In this work, the single crystal Chemical Vapor Deposition (CVD) diamond detectors were designed and fabricated to investigate and detect any possible charged particle and neutron emissions from gas-phase Low Energy Nuclear ...
3D imaging for brachytherapy patient and mold applicator positioning verification
(University of Missouri--Columbia, 2017)
We developed a stereo vision method for 3D imaging of HDR brachytherapy skin cancer applicator positioning and tracking with respect to patients' anatomical features. The setup consists of two high-resolution scientific ...
Measurements of adhesion force between single particles and clusters interacting with some VHTR structural steels
(University of Missouri--Columbia, 2016)
The adhesion force and work of adhesion between aerosols (graphite and silver) generated in very high temperature reactors (VHTRs) and interacting with structural materials are presented. The method involves using Atomic ...
Investigation of portable nuclear power systems
(University of Missouri--Columbia, 2014)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT AUTHOR'S REQUEST.] Energy needs for modern society are an ever-changing and complex problem. One of the most diverse areas of energy needs is portable energy generation. ...
Oxidation of nuclear- and matrix-grade graphite for VHTR air ingress accident scenarios
(University of Missouri--Columbia, 2016)
One of the most severe accidents anticipated for the Very High Temperature Reactor (VHTR) is an air ingress accident caused by a pipe break, where the reactor vessel and core become fully immersed in air as the core ...
Assessing the impact of potential regulatory changes on demonstrating compliance with reactor pressure vessel integrity requirements
(University of Missouri--Columbia, 2016)
This paper provides a review of current regulations concerning reactor pressure vessel toughness requirements and evaluates three potential changes to those regulations. Following a brief overview of the regulatory framework ...
Validation of radiation treatment planning with a pseudo-CT derived from MR images
(University of Missouri--Columbia, 2015)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] Historically CT has been the necessary for radiation therapy dose calculation due to its inherent density information. However there is increased ...
Task-based image quality assessment in radiation therapy
(University of Missouri--Columbia, 2016)
Medical imaging is an integral part of radiation therapy, therefore image quality assessment (IQA) is important for improving patient treatments. Current IQA methods for radiation therapy do not directly consider the task ...
Oxidation behavior of very high temperature reactor (VHTR) candidate materials: 316l stainless steel, Alloy 617, and Incoloy-800H
(University of Missouri--Columbia, 2016)
High temperature nuclear reactors require alloys to perform well at temperatures around 1000 to 1400 K. The oxidation behavior of three high temperature reactor candidate materials, 316 L stainless steel, alloy 617, and ...
The effect of uncertainty in "field of the day" treatment regimes in proton therapy
(University of Missouri--Columbia, 2015)
Purpose: A common practice in proton therapy is to plan a treatment using multiple fields, but only deliver a subset of those fields for each fraction. This practice could lead to increased uncertainty in the treatment. ...