Index Catalog // ScholarsArchive@OSU

A quantitative comparison of cardiovascular imaging systems with respect to the resolution capabilities and the resulting skin entrance doses operating in both fluoroscopic and cine mode

Creator:: Helms, W. Scott
Abstract:: The increasing use of medical procedures using ionizing radiation has increased significantly in recent years. In 1987, the National Council on Radiation Protection Report 93 (NCRP) reported that the average exposure ionizing radiation was 53mRem/year (0.53mSv/year). In their most recent study on radiation exposures NCRP Report 160 in 2009, the...
Resource Type:: Masters Thesis
Full Text:: recent years. In 1987, the National Council on Radiation Protection Report 93 (NCRP) reported that the

Validation of radiographic automatic exposure control device testing in the era of filmless radiography : and new variables associated with testing

Creator:: Allman, Robert M.
Abstract:: The exposure needed for a clinically useful image requires much less precision when using digital radiography (DR) than when using screen/film (SF) radiography. The Automatic Exposure Control (AEC) device was developed for ensuring accurate and precise exposures with SF technology. This thesis evaluates the importance of the AEC device in...
Resource Type:: Masters Thesis
Full Text:: ..………..…3 from AAPM report no. 14 (AAPM, 1985) 2. The front and top of an RTI Barracuda cabinet

Relative effective dose risk based on medical diagnostic modalities at the Nebraska Medical Center

Creator:: Petrocchi, Michael D.
Abstract:: The use of medical diagnostic imaging involving ionizing radiation has drastically increased in recent years causing concern about possible long term consequences such as the induction of cancer. Recognizing this recent trend, the Institutional Review Board (IRB) at the Nebraska Medical Center commissioned this study in order to determine effective...
Resource Type:: Masters Thesis
Full Text:: effective dose outcomes showed that there was no definitively higher rate of radiation dose between

Release of patients following the administration of radiopharmaceuticals

Creator:: Munger, Eric J.
Abstract:: As a standard practice, the use of radioactive materials has been widely used when treating many diseases. In recent years advances in biotechnology and labeling techniques have broadened the application of these materials. Candidates selected for radiopharmaceutical therapy may be treated on an outpatient basis or hospitalized following administration to...
Resource Type:: Masters Thesis
Full Text:: equation from NCRP Report No. 37 to calculate the dose to persons from the released patient. (NCRP – 37

Environmental pathway analysis of a radioactive zirconium sand uploading facility

Creator:: Miller, Robert E.
Abstract:: The Teledyne Wah Chang facility is a manufacturer of the rare metal zirconium. The facility has been in constant production since 1956. In 1973 an attempt to utilize different sand ore sources from Nigeria and India in a new carbiding process, prior to chlorination, failed. The resulting byproducts of the...
Resource Type:: Masters Thesis
Full Text:: current workers on site. No consideration had been given to possible future occupants under Redacted for

Dose-effects relationships in non-human biota : development of field sampling, dosimetric and analytic techniques through a case study of the aquatic snail Campeloma decisum at Chalk River Laboratories

Creator:: Ruedig, Elizabeth B.
Abstract:: In the last decade regulatory bodies have begun to implement standards to protect populations of non-human biota (NHB) from the consequences of radiation exposure. This is a departure from previous regulatory frameworks which were concerned only with protecting man. The implementation of these new standards has started an ongoing discussion...
Resource Type:: Dissertation
Full Text:: rate. There was no evidence that snail population health was influenced by radiation exposure (p=0.70

Application of autoradiographic techniques for contaminant distribution studies in soils

Creator:: Povetko, Oleg G.
Abstract:: In order to determine the physical location of contaminants in soil, two solidified soil "thin" sections, which preserve the undisturbed structural characteristics of the original soil, containing weapons-grade plutonium from the Rocky Flats Environmental Test Site were prepared. Two autoradiographic methods were used in radionuclide mapping: contact autoradiography using CR-39®...
Resource Type:: Dissertation
Full Text:: moved down more slowly than smaller ones and no significant breakup of plutonium oxide particles

Accounting for Heterogeneity Corrections in Breast Brachytherapy

Creator:: Rogers, Kevin L.
Abstract:: Purpose: Model-based dose calculation algorithms (MBDCAs) have become clinically available within the past several years in commercially available brachytherapy planning systems. This work investigates the application of a 510(k) approved MBDCA Acuros™ BV and establishes a reproducible method of validation. The research is broken into three primary research goals. The...
Resource Type:: Dissertation
Full Text:: dose thresholds showed no trending in data and were not predictable

Determining the bioavailability of soil-associated radium using in vitro methodology

Creator:: Tack, Krystina M.
Abstract:: Soil that is contaminated with radioactive elements poses an exposure hazard to those whom may take up temporary or permanent residence on such a site. Of particular interest is the internal exposure from ingestion of this radioactive soil. Although most ingestion of soil is inadvertent, usually being attached to foodstuffs...
Resource Type:: Masters Thesis
Full Text:: analysis). The range of alpha particles is no more than a few centimeters in air, but when they are

Development and Application of Voxelized Dosimetric Models for Biota : Characterization of the Uncertainty in the International Commission on Radiological Protection's Wildlife Dosimetry System

Creator:: Caffrey, Emily Amanda
Abstract:: A system for radiological dosimetry for nonhuman biota developed by International Commission on Radiological Protection (ICRP) relies on calculations that utilize the Monte Carlo simulations of simple, ellipsoidal geometries with internal radioactivity distributed homogeneously throughout. In this manner it is quick and easy to estimate whole-body dose rates to biota....
Resource Type:: Dissertation
Full Text:: no longer a constant, but increases with particle size......... 64 LIST OF TABLES

ScholarsArchive@OSU

A quantitative comparison of cardiovascular imaging systems with respect to the resolution capabilities and the resulting skin entrance doses operating in both fluoroscopic and cine mode

Validation of radiographic automatic exposure control device testing in the era of filmless radiography : and new variables associated with testing

Relative effective dose risk based on medical diagnostic modalities at the Nebraska Medical Center

Release of patients following the administration of radiopharmaceuticals

Environmental pathway analysis of a radioactive zirconium sand uploading facility

Dose-effects relationships in non-human biota : development of field sampling, dosimetric and analytic techniques through a case study of the aquatic snail Campeloma decisum at Chalk River Laboratories

Application of autoradiographic techniques for contaminant distribution studies in soils

Accounting for Heterogeneity Corrections in Breast Brachytherapy

Determining the bioavailability of soil-associated radium using in vitro methodology

Development and Application of Voxelized Dosimetric Models for Biota : Characterization of the Uncertainty in the International Commission on Radiological Protection's Wildlife Dosimetry System

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