Browsing by Subject "Monte Carlo"
Now showing items 1-16 of 16
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A database of 40 patient-based computational models for benchmarking organ dose estimates in CT.
(Medical physics, 2020-07-06)PURPOSE:Patient radiation burden in CT can best be characterized through risk estimates derived from organ doses. Organ doses can be estimated by Monte Carlo simulations of the CT procedures on computational phantoms assumed ... -
A General-Purpose Simulator for Evaluating Astronaut Radiation Exposure
(2021)Purpose: Current Monte Carlo simulations modeling space radiation exposure typically use simplistic human phantoms with low anatomical detail and minimal variability in physical characteristics. This thesis describes the ... -
A Semi-Empirical Monte Carlo Method of Organic Photovoltaic Device Performance in Resonant, Infrared, Matrix-Assisted Pulsed Laser Evaporation (RIR-MAPLE) Films
(2015)Utilizing the power of Monte Carlo simulations, a novel, semi-empirical method for investigating the performance of organic photovoltaics (OPVs) in resonant infrared, matrix-assisted pulsed laser evaporation (RIR-MAPLE) ... -
ABSOLUTE QUANTIFICATION IN SMALL PLANT RADIOTRACER STUDIES
(2017)The main objective of this dissertation research is to develop measurement and data-analysis tools for improving the quantitative accuracy of radiotracer studies of small plants, e.g., grasses in their early growth stages ... -
Algae and Coal: Turning Pollution Into Prosperity
(2010-04-30)Algae have long been researched as a potential source of biodiesel and biofuel because of their quick growth rate, simple inputs and ability to grow under environments unsuitable for many other plants. Using a Monte Carlo ... -
Clinical CBCT-Based Dose Simulation for 80 kVp X-PACT Treatment Using FLUKA Monte Carlo Package
(2017)X-PACT as a novel cancer therapy utilizes kilovoltage x-ray beam, phosphor and psoralen to treat solid tumors. Since x-ray beam is not commonly used for radiation therapy treatment purposes, a lack of treatment planning ... -
CONE BEAM COMPUTED TOMOGRAPHY (CBCT) DOSIMETRY: MEASUREMENTS AND MONTE CARLO SIMULATIONS
(2010)Cone beam computed tomography (CBCT) is a 3D x-ray imaging technique in which the x-ray beam is transmitted to an object with wide beam geometry producing a 2D image per projection. Due to its faster image acquisition time, ... -
Dynamic Electron Arc Radiotherapy (DEAR): A New Conformal Electron Therapy Technique
(2015)Electron beam therapy represents an underutilized area in radiation therapy. While electron radiation therapy has existed for many decades and electron beams with multiple energies are available on linear accelerators – ... -
Evaluation of Patient Effective Dose of Neurovascular Imaging Protocols of a C-arm Cone-beam CT & Estimation of Current Source Radioactivity of a Cs-137 Irradiator
(2012)<bold>Purpose: </bold>(Project 1) The purpose of this study was three-fold: 1) to estimate the organ doses and effective dose (ED) for patients undergoing neurovascular imaging protocols, 2) to study the effect ... -
Evaluation of the Does Reduction Potential Using a Breast Positioning Technique for Organ-based Tube Current Modulated CT Examinations
(2016)Purpose: The purpose of this work was to investigate the breast dose saving potential of a breast positioning technique (BP) for thoracic CT examinations with organ-based tube current modulation (OTCM).Methods: The study ... -
Exploiting Optical Contrasts for Cervical Precancer Diagnosis via Diffuse Reflectance Spectroscopy
(2010)Among women worldwide, cervical cancer is the third most common cancer with an incidence rate of 15.3 per 100,000 and a mortality rate of 7.8 per 100,000 women. This is largely attributed to the lack of infrastructure and ... -
Lateral Diffusion of Receptors at Synapse Influenced by Synapse Geometry and Macromolecular Crowding
(2014)Cells express a variety of proteins on their surface that allows them to sample the world. These proteins are embedded in the plasma membrane, a bilayer of lipids that surrounds the cell. Since the lipid and protein dimensions ... -
Organ doses from CT localizer radiographs: Development, validation, and application of a Monte Carlo estimation technique
(MEDICAL PHYSICS, 2019-11-01) -
Radiation Dose and Diagnostic Accuracy in Pediatric Computed Tomography
(2010)Since its inception in the 1970's, computed tomography (CT) has revolutionized the practice of medicine and evolved into an essential tool for diagnosing numerous diseases not only in adults but also in children. The clinical ... -
Speculative Physics: the Ontology of Theory and Experiment in High Energy Particle Physics and Science Fiction
(2014)The dissertation brings together approaches across the fields of physics, critical theory, literary studies, philosophy of physics, sociology of science, and history of science to synthesize a hybrid approach for instigating ... -
Stochastic Simulations for the Detection of Objects in Three Dimensional Volumes: Applications in Medical Imaging and Ocean Acoustics
(2007-05-10)Given a known signal and perfect knowledge of the environment there exist few detection and estimation problems that cannot be solved. Detection performance is limited by uncertainty in the signal, an imperfect model, uncertainty ...
