Search Constraints

Start Over
Filtering by: Creator Hall, Lynn L. Remove constraint Creator: Hall, Lynn L. Degree Name Master of Science (M.S.) Remove constraint Degree Name: Master of Science (M.S.) Subject Radiation dosimetry Remove constraint Subject: Radiation dosimetry

Search Results

  • An analysis of shielding requirements in conjunction with current radiographic imaging practices

    Creator:
    Mallory, Stacy L.
    Abstract:
    The National Council of Radiation Protection and Measurements Report No. 49, originally issued on September 15, 1976, has been the primary design guide for diagnostic x-ray structural shielding in the United States. To further protect the public from various areas of medical radiation exposure, NCRP issued Report 116 in 1987...
    Resource Type:
    Masters Thesis
    Full Text:
    AN ABSTRACT OF THE THESIS OF Stacy L. Mallory for the degree of

  • Mapping dose rate of the Oregon State University neutron radiography facility

    Creator:
    Ropon, Kimberly
    Abstract:
    The Department of Nuclear Engineering at Oregon State University has recently introduced a neutron radiography facility (OSNRF). The facility is dependent on a neutron source established by the OSU TRIGA® Reactor (OSTR). It was unknown how accurately a computerized model of the OSTR in conjunction with the OSNRF could represent...
    Resource Type:
    Masters Thesis
    Full Text:
    Instrument Technician, for taking the time to assist with measuring the dose in the beam hall. I appreciate

  • Blood-based gene expression as a biodosimetry model for neuroblastoma patients treated with ¹³¹I-mIBG

    Creator:
    Edmondson, David A.
    Abstract:
    Internal dosimetry is challenging and relies on estimates using MIRD or ICRP biokinetic models. To address this, we looked at gene expression analysis in whole blood from radiotherapy patients. Patients with relapsed or refractory neuroblastoma who received ¹³¹I-mIBG at UCSF were used to correlate internal ionizing radiation (IR) dose with...
    Resource Type:
    Masters Thesis
    Full Text:
    is that the more proliferative the cell is the more radiosensitive it is (Hall & Giaccia, 2012

  • Retrospective thermal neutron fluence determination using lithium-ion mobile telephone batteries

    Creator:
    Dorrell, Nick J.
    Abstract:
    Fortuitous dosimeters are radiosensitive objects carried by an individual who was exposed to radiation. These objects can be analyzed some time after exposure and the results can be used to aid in calculating radiation fields and doses received by individuals. Items that make good fortuitous dosimeters are those that are...
    Resource Type:
    Masters Thesis
    Full Text:
    , medical interventions may or may not be implemented (Hall 2006). Triage following an event in which

  • 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 (ED) (Hall and Giaccia 2006). The effective dose allows non-uniform internal and external

  • Locating and Quantifying Contamination Deposited in Radiation Puncture Wounds

    Creator:
    Wehmann, Nicholas K.
    Abstract:
    Internal dosimetry models show a representation of how radionuclides move through the body. This study takes a look at radiation wounds by modelling a puncture wound to the hand using Microshield software. An analysis of these models provides a triangulation method that could be used to investigate wound characteristics, as...
    Resource Type:
    Masters Thesis
    Full Text:
    physical injury is the first priority, and takes precedence over any radioactive contamination (Hall

  • Human Eye Dosimetry: Air Gap Analysis by Shield Placement and Photon Energy

    Creator:
    Herrera, Joshua P.
    Abstract:
    When the ICRP updated their recommended limits for eye dose, they ignited a renewed interest in eye dosimetry. Especially, how the updated eye dose estimates affect current regulations and what that would mean to a radiation worker. Radiation workers are commonly required to wear leaded eyeglasses to reduce their dose...
    Resource Type:
    Masters Thesis
    Full Text:
    .................................................................... 52 Appendix Figures L: 17 cm Photon Energy to Dose Curve

  • Comparison of dosimetric modeling of the International Commission on Radiological Protection trout reference animal

    Creator:
    Comolli, Michelle LeAnne
    Abstract:
    Radiation protection has historically been from a human protection approach, therefore many studies have neglected the potential dose contribution from the gastrointestinal tract (GIT) in animal studies. The International Commission on Radiological Protection (ICRP) utilized simplified geometric shapes with Dose Conversion Factors (DCF) based on homogenized models for the trout...
    Resource Type:
    Masters Thesis
    Full Text:
    Karachay measured 6.5 x 10 6 Bq/L of 90 Sr, 1.6 x 10 7 Bq/L 137 Cs, and 3.0 x 10 3 Bq/L total

  • SSPM-based optical fiber radiation dosimeter

    Creator:
    Konnoff, Daniel C.
    Abstract:
    Current state-of-the-art environmental, clinical, and in-vivo radiation sensing systems utilizing various inorganic and tissue-equivalent plastic scintillators are not user friendly, suffer from electron-beam-generated noise, and are difficult to deploy successfully for real-time dosimetry. A robust, real-time detection system using different scintillating materials coupled to solid-state detectors by optical fibers is...
    Resource Type:
    Masters Thesis
    Full Text:
    approximated by equation 2.17. [Sze, 2006] 14 M = 1 1− ∫ L 0 α(x)dx = IM/Ip = 1 1− α(x)Wd (2.17) where

  • Monte Carlo derived absorbed fractions in a voxelized model of a rainbow trout

    Creator:
    Hess, Catherine A.
    Abstract:
    The International Commission on Radiological Protection (ICRP) has modeled twelve reference animals and plants (RAPs) with simple geometric shapes to be used when estimating radiation dose to non-human biota (NHB). In recent years, there has been interest in creating more realistic models in order to better understand the radiation interactions...
    Resource Type:
    Masters Thesis
    Full Text:
    wide range of mammalian cells due to their similarity in DNA structure (Hall & Giaccia, 2006