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Tesis sobre el tema "Radiation dose"

Autor: Grafiati
Publicado: 4 de junio de 2021
Última modificación: 25 de julio de 2025

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1

ACOSTA, PEREZ CLARICE de F. "Contribuição ao calculo do valor alfa no estudo de otimização da radioproteção." reponame:Repositório Institucional do IPEN, 2007. http://repositorio.ipen.br:8080/xmlui/handle/123456789/11560.

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Made available in DSpace on 2014-10-09T12:53:16Z (GMT). No. of bitstreams: 0<br>Made available in DSpace on 2014-10-09T13:58:40Z (GMT). No. of bitstreams: 0<br>Tese (Doutoramento)<br>IPEN/T<br>Instituto de Pesquisas Energeticas e Nucleares - IPEN-CNEN/SP
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2

Brucoli, Matteo. "Total ionizing dose monitoring for mixed field environments." Thesis, Montpellier, 2018. http://www.theses.fr/2018MONTS093/document.

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La mesure de la dose ionisante est aujourd'hui une tâche cruciale pour une large gamme d'applications fonctionnant dans des environnements de rayonnement sévères. Dans le contexte de l'amélioration de la luminosité du grand collisionneur de hadrons (LHC), la mesure des niveaux de rayonnement le long du complexe d'accélérateurs du CERN va devenir encore plus difficile. A cet effet, une connaissance plus détaillée du champ de rayonnement dans le tunnel de l'accélérateur et ses zones adjacentes devient nécessaire pour définir les exigences d'installation, de déplacement ou de blindage de l'électr
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3

Chapple, Claire Louise. "The optimisation of radiation dose in paediatric radiology." Thesis, University of Newcastle Upon Tyne, 1998. http://hdl.handle.net/10443/497.

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The importance of monitoring, and where possible reducing, the level of radiation dose from diagnostic X-ray examinations has been recognised for many years and is becoming of increasing concern. Dose reduction is of particular concern in paediatric radiology, and there are specific problems associated with the monitoring and comparison of radiation doses to children. Any optimisation study relies on a framework of good dosimetry. Two techniques have been developed to improve the collection of patient dose data: the automation of survey techniques to increase the quantity of data collected; an
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4

Poon, Emily Sau Chee. "Patient-specific dose calculation methods for high-dose-rate iridium-192 brachytherapy." Thesis, McGill University, 2010. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=86632.

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In high-dose-rate iridium-192 brachytherapy, the radiation dose received by the patient is calculated according to the AAPM Task Group 43 (TG-43) formalism. This table-based dose superposition method uses dosimetry parameters derived with the radioactive iridium source centered in a water phantom. It neglects the dose perturbations caused by inhomogeneities, such as the patient anatomy, applicators, shielding, and radiographic contrast solution.<br>In this work, we evaluated the dosimetric characteristics of a shielded rectal applicator with an endocavitary balloon injected with contrast solut
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5

Tozer-Loft, Stephen M. "Dose volume analysis in brachytherapy and stereotactic radiosurgery." Thesis, University of Sheffield, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.366100.

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6

Swart, Gillian. "Measurement of absorbed dose for paediatric patients for the purpose of developing dose guidelines in paediatric radiology." Thesis, Peninsula Technikon, 2004. http://hdl.handle.net/20.500.11838/1546.

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Thesis (MTech (Radiography))--Peninsula Technikon, 2004<br>The radiation risks associated with children are higher than the risk for adults. Children have growing organs and they have a longer life expectancy than that of adults. As a consequence the effects of damage from radiation could be greater than in adults. Children who receive radiation damage may pass genetic damage onto future generations. This study was carried out to investigate the optimal effective x-ray dose young children need to receive who have radiographic examination to the chest at Tygerberg Hospital, South Africa.
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7

Shah, Nihal. "The investigation of low dose radiation hypersensitivity." Thesis, Imperial College London, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.405748.

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8

Wong, Tony Po Yin, and tony wong@swedish org. "Improving Treatment Dose Accuracy in Radiation Therapy." RMIT University. Applied Sciences, 2007. http://adt.lib.rmit.edu.au/adt/public/adt-VIT20080104.144139.

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The thesis aims to improve treatment dose accuracy in brachytherapy using a high dose rate (HDR) Ir-192 stepping source and in external beam therapy using intensity modulated radiation therapy (IMRT). For HDR brachytherapy, this has been achieved by investigating dose errors in the near field and the transit dose of the HDR brachytherapy stepping source. For IMRT, this study investigates the volume effect of detectors in the dosimetry of small fields, and the clinical implementation and dosimetric verification of a 6MV photon beam for IMRT. For the study of dose errors in the near field o
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9

McFadden, Sonyia Lorraine. "Radiation dose optimisation in paediatric interventional cardiology." Thesis, University of Ulster, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.516452.

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10

Tootell, A. K. "Radiation dose assessment : measurement, estimation and interpretation." Thesis, University of Salford, 2018. http://usir.salford.ac.uk/48041/.

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New technologies or methods of image acquisition are driven by the need for increased anatomical information to improve diagnostic accuracy or surgical planning. These new technologies are often accompanied with additional radiation dose yet this can be justified through the consideration of the benefit it brings. Examples include the use of CT colonography instead of double contrast barium enemas, CT urography replacing intravenous urography and, in nuclear medicine imaging the increased use of CT imaging as part of single photon emission tomography and positron emission tomography to correct
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11

Alvarez, Luis Emilio. "Radiation dose to the global flying population." Thesis, Massachusetts Institute of Technology, 2016. http://hdl.handle.net/1721.1/103443.

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Thesis: S.M., Massachusetts Institute of Technology, Department of Aeronautics and Astronautics, 2016.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 57-60).<br>Civil airliner passengers and crew are exposed to elevated levels of radiation relative to being at sea level. Previous studies have assessed the radiation dose received in particular cases or for cohort studies. Here we present the first estimate of the total radiation dose received by the worldwide civilian flying population. We simulated flights globally from 2000 to 2013 using schedule data,
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12

Finklea, Lauren. "Room radiation dose coefficients for external exposure." Thesis, Georgia Institute of Technology, 2015. http://hdl.handle.net/1853/53943.

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In instances where a building room is radiologically contaminated, dose rate coefficients are needed to estimate the dose rate to the occupants. One’s position in the room, whether in the center of the room or the corner, could have an effect on dose rate. The Environmental Protection Agency (EPA) published in Federal Guidance Report 12 (EPA 1993) dose rate coefficients for idealized exposure geometries, including exposure to radionuclides distributed infinitely in various thicknesses of soil. The dimensions of the exposure plane were taken to be infinite in extent. Due to this assumption, u
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13

Akisheva, Yulia, and Ramin Farid. "Radiation Dose Analysis of the MIST Satellite." Thesis, KTH, Skolan för elektro- och systemteknik (EES), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-200617.

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14

Nocum, Don. "Optimising patient radiation dose for uterine artery embolisation." Thesis, The University of Sydney, 2022. https://hdl.handle.net/2123/29778.

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Uterine artery embolisation (UAE) is a minimally invasive procedure used to treat patients with symptomatic uterine fibroids and/or adenomyosis. UAE involves x-ray imaging with an angiography system that emits ionising radiation. The practices of radiation dose optimisation are critical for UAE patients who are usually in their reproductive-age – to minimise the exposure to reproductive organs. The aims of this thesis were to: conduct a literature review on the factors that contribute to the radiation dose of patients during UAE; establish a regression model to identify the predictors of radi
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15

MOURA, EDUARDO S. "Desenvolvimento de um objeto simulador para investigação de heterogeneidades em braquiterapia de alta taxa de dose." reponame:Repositório Institucional do IPEN, 2015. http://repositorio.ipen.br:8080/xmlui/handle/123456789/23889.

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Submitted by Claudinei Pracidelli (cpracide@ipen.br) on 2015-08-07T14:35:13Z No. of bitstreams: 0<br>Made available in DSpace on 2015-08-07T14:35:13Z (GMT). No. of bitstreams: 0<br>Tese (Doutorado em Tecnologia Nuclear)<br>IPEN/T<br>Instituto de Pesquisas Energeticas e Nucleares - IPEN-CNEN/SP
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16

Veinot, Kenneth Guy. "An angular dependent neutron effective-dose-equivalent dosimeter." Diss., Georgia Institute of Technology, 1999. http://hdl.handle.net/1853/17595.

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17

Harris, Rhodri. "Radiation effects on custom MOS devices." Thesis, University of Southampton, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.301376.

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18

Fricker, Katherine. "Collateral exposure: the additional dose from radiation treatment." Thesis, University of Canterbury. Physics and Astronomy, 2012. http://hdl.handle.net/10092/10361.

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For patients receiving radiation therapy, there is a risk of developing radiation induced carcinomas, especially if they have a long life expectancy. However, radiotherapy is not the only contributor of radiation exposure to healthy tissue. With the introduction of highly conformal treatment techniques comes the increase in pretreatment imaging necessary to accurately target tumour volumes and consequently, radiation exposure to healthy tissue. In this work the radiation dose delivered to radiosensitive organs from a number of treatment planning techniques was evaluated and the risk of radiat
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19

Aguwa, Kasarachi. "Radiation Dose Study in Nuclear Medicine Using GATE." Thesis, The University of Arizona, 2015. http://hdl.handle.net/10150/593601.

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Dose as a result of radiation exposure is the notion generally used to disclose the imparted energy in a volume of tissue to a potential biological effect. The basic unit defined by the international system of units (SI system) is the radiation absorbed dose, which is expressed as the mean imparted energy in a mass element of the tissue known as "gray" (Gy) or J/kg. The procedure for ascertaining the absorbed dose is complicated since it involves the radiation transport of numerous types of charged particles and coupled photon interactions. The most precise method is to perform a full 3D Monte
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20

Dahlman, Pär. "CT Urography : Efforts to Reduce the Radiation Dose." Doctoral thesis, Uppsala universitet, Enheten för radiologi, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-146332.

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Computed tomography urography (CTU) is today the imaging method used to investigate patients with suspected urinary tract malignancy, replacing the old imaging method intravenous pyelography (IVP) about a decade ago. The downside of this shift was that the effective radiation dose to the examined patient was eight times higher for CTU compared to IVP. Based on four different studies, the present thesis focused on efforts to reduce the CTU radiation dose.   In study I, the number of cysts and solid lesions in the separate scan phases was evaluated in 57 patients undergoing four-phase CTU 1997-9
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21

Nord, Janne. "Modeling of high-dose radiation damage in semiconductors." Helsinki : University of Helsinki, 2003. http://ethesis.helsinki.fi/julkaisut/mat/fysik/vk/nord/.

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22

Bero, Mamdouh A. "Development of a three-dimensional radiation dosimetry system." Thesis, University of Surrey, 2001. http://epubs.surrey.ac.uk/719/.

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23

GERULIS, EDUARDO. "Controle de dose em transporte rodoviário de material radioativo." reponame:Repositório Institucional do IPEN, 2013. http://repositorio.ipen.br:8080/xmlui/handle/123456789/10594.

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Made available in DSpace on 2014-10-09T12:42:19Z (GMT). No. of bitstreams: 0<br>Made available in DSpace on 2014-10-09T14:00:05Z (GMT). No. of bitstreams: 0<br>Tese (Doutoramento)<br>IPEN/T<br>Instituto de Pesquisas Energeticas e Nucleares - IPEN-CNEN/SP
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24

Zaytzev, A. S., and A. V. Kutsak. "The radiation exposure to people due to natural radiation in buildings." Thesis, Sumy State University, 2017. http://essuir.sumdu.edu.ua/handle/123456789/54196.

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Research goals and objectives: To perform the research on the territory Zaporozhye region to identify the existing level of gamma background at the open area and inside the living buildings, and to estimate possible doses of radiation from the natural sources.
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25

ANGELOCCI, LUCAS V. "Estudo de casos clínicos em radioterapia através do sistema de planejamento AMIGOBrachy." reponame:Repositório Institucional do IPEN, 2016. http://repositorio.ipen.br:8080/xmlui/handle/123456789/26926.

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Submitted by Marco Antonio Oliveira da Silva (maosilva@ipen.br) on 2016-12-21T11:30:16Z No. of bitstreams: 0<br>Made available in DSpace on 2016-12-21T11:30:16Z (GMT). No. of bitstreams: 0<br>O sucesso de uma radioterapia depende do correto planejamento da dose a ser entregue ao volume alvo. Na braquiterapia, modalidade da radioterapia onde um radioisótopo selado é implantado intracavitariamente ou intersticialmente no paciente, há menos avanços em sistemas de planejamento de tratamento computacionais do que na teleterapia, amplamente mais utilizada nos serviços típicos. Porém, a braquiterapi
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26

Renaud, Marc-André. "Pre-calculated track Monte Carlo dose calculation engine." Thesis, McGill University, 2014. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=121295.

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Modern treatment planning techniques such as inverse planning have increased the demand for rapid dose calculation methods to accommodate the large number of dose distributions required to generate a treatment plan. General-purpose Monte Carlo approaches for dose calculation are known to offer the highest accuracy in dose calculation at the expense of significant computing time. This work adapts a Macro Monte Carlo approach to dose calculation for electrons andprotons for use with a GPU card, using pre-generated tracks from general-purpose Monte Carlo codes. The algorithm was implemented on th
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27

Peet, Samuel. "Out-of-field dosimetry in contemporary radiation therapy." Thesis, Queensland University of Technology, 2022. https://eprints.qut.edu.au/234916/1/9325565_samuel_peet_thesis.pdf.

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Radiation therapy is a beneficial treatment for approximately half of all people diagnosed with cancer. This project improved the safety of radiation therapy for several vulnerable cohorts: pregnant patients, patients with electronic implants such as pacemakers, and young people at risk of developing secondary cancers later in life. In doing so, this research furthered equitable access to safe, high-quality health care.
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28

Rowbottom, Carl Graham. "Optimisation of beam-orientations in conformal radiotherapy treatment planning." Thesis, Institute of Cancer Research (University Of London), 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.314088.

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29

Tangboonduangjit, Puangpen. "Intensity-modulated radiation therapy dose maps the matchline effect /." Access electronically, 2006. http://www.library.uow.edu.au/adt-NWU/public/adt-NWU20060724.095712/index.html.

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30

Prokopčiuk, Nina. "Application of probabilistic methods for ionizing radiation dose assessment." Doctoral thesis, Lithuanian Academic Libraries Network (LABT), 2011. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2011~D_20111201_142318-45933.

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The aim of this doctoral dissertation is to assess the probable impact of ionizing radiation on the public health and the environment (including fauna and flora) in the vicinity of nuclear power engineering objects (in case of the Maišiagala near-surface radioactive waste repository – by evaluating the possible impact on the human health, while in case of the Ignalina NPP cooling basin, Lake Drūkšiai – by evaluating the possible impact on the freshwater ecosystem biota) by applying probabilistic methods as well as to determine whether this activity after assessment of its character and impact
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31

Wiklund, Kristin. "Modeling of dose and sensitivity heterogeneities in radiation therapy." Doctoral thesis, Stockholms universitet, Fysikum, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-74719.

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The increased interest in the use of light ion therapy is due to the high dose conformity to the target and the dense energy deposition along the tracks resulting in increased relative biological effectiveness compared to conventional radiation therapy. In spite of the good clinical experience, fundamental research on the characteristics of the ion beams is still needed in order to be able to fully explore their use. Therefore, a Monte Carlo track structure code, KITrack, simulating the transport of electrons in liquid water, has been developed and used for calculation of parameters of interes
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32

Castellano, I. A. "Optimisation of radiation dose to patients in computed tomography." Thesis, Institute of Cancer Research (University Of London), 2006. http://publications.icr.ac.uk/9716/.

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Methodologies for optimisng CT scanning protocols have been developed in this project. In the first instance, a novel Monte Carlo CT model has been constructed to calculate effective dose. Comparisons With experimental data in CT dose phantoms indicate that the accuracy of the model is better than 10%. The model has been used to demonstrate that, if used with care, commercial dosimetry packages can calculate effective dose to standard sized subjects undergoing multi-slice CT scans of the torso without incurring errors larger than 20 %. For electron-beam CT, the model has been used to calculate
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33

Raines, Katherine Elizabeth. "The effects of chronic low-dose radiation on bumblebees." Thesis, University of Stirling, 2018. http://hdl.handle.net/1893/28699.

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The consequences to wildlife of living in contaminated areas with chronic low-dose rates of radiation are still relatively unknown. Laboratory studies using acute radiation have demonstrated that invertebrates are relatively radioresistant compared to other taxa. However, there is little scientific evidence to show how chronic low dose rates affect invertebrates. This is problematic for understanding the consequences to wildlife living in highly contaminated areas and also testing assumptions made for invertebrates by the International Commission on Radiological Protection (ICRP). This thesis
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34

Hagelberg, Melker. "Minimization of radiation dose exposure during a PCI procedure." Thesis, KTH, Fysik, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-189149.

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35

Wooten, Hasani Omar. "Calculation of internal dose conversion factors for selected spallation products." Thesis, Georgia Institute of Technology, 2002. http://hdl.handle.net/1853/17247.

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36

Hearnsberger, David Wayne. "An external dose reconstruction involving a radiological dispersal device." Diss., Texas A&M University, 2006. http://hdl.handle.net/1969.1/4759.

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Recent events have underscored the need for the United States government to provide streamlined emergency response procedures and subsequent dose estimations for personnel responding to incidents involving radioactive material. Indeed, the National Council on Radiation Protection and Measurements Report No. 138 (NCRP 2001) indicates that exposures received by first responders will be important for a number of reasons, including planning for the appropriate use of key personnel in an extended emergency situation. In response, the Department of Homeland Security has published Protective Action G
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37

Madhoo, Jitesh. "Continuous low dose rate irradiation of the rat brain." Doctoral thesis, University of Cape Town, 1999. http://hdl.handle.net/11427/26785.

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The reported median survival time for patients who are diagnosed with high grade astrocytomas and who undergo postoperative radiotherapy is of the order of 24 to 40 weeks. The course of radiotherapy administered to these patients takes up a considerable portion of their expected survival time. Therefore, any means of reducing the treatment time may contribute to an enhanced quality of life for these patients. A potentially useful method for the reduction of the treatment time may be achieved with the use of continuous low dose rate external beam radiotherapy, where the treatment is administere
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38

Fenwick, John David. "Biological modelling of pelvic radiotherapy : potential gains from conformal techniques." Thesis, Institute of Cancer Research (University Of London), 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.322314.

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39

Rossouw, Maria Susanna. "Validation of endpoints as biomarkers of low-dose radiation damage." Thesis, Cape Technikon, 2004. http://hdl.handle.net/20.500.11838/1461.

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Thesis (MTech (Biomedical Technology))--Cape Technikon, Cape Town, 2004<br>The need for radiobiological research was bom from the discovery that high doses of radiation could cause cancer and other health effects. However, recent developments in molecular biology uncovered the effects of low doses of radiation on different biological systems and as a result new techniques have been developed to measure these effects. The aim of this study was thus to validate biomarkers of initial DNA strand breaks, micronucleus formation, and the different pt ;ases of apoptosis as biological indic
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40

Lampe, Nathanael. "De l’impact à long terme des radiations ionisantes sur les systèmes vivants." Thesis, Université Clermont Auvergne‎ (2017-2020), 2017. http://www.theses.fr/2017CLFAC011/document.

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La vie sur Terre s’est adaptée à un environnement où il y a un faible et persistent bruit de fond radiatif qui interagit avec les cellules. Loin des effets clairement nocifs des radiations à haute dose, il est difficile d’évaluer et de comprendre les impacts des faibles doses de la radioactivité naturelle sur les systèmes vivants. Nous avons tenté d’étudier si le bruit de fond radiatif est un facteur important dans l’évolution, en menant des expériences évolutives identiques avec Escherichia coli au Laboratoire de Physique Corpusculaire de Clermont-Ferrand, et au Laboratoire Souterrain de Moda
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41

POLI, MARIA E. R. "Definição do volume de planejamento do alvo (PTV) e seu efeito na radioterapia." reponame:Repositório Institucional do IPEN, 2007. http://repositorio.ipen.br:8080/xmlui/handle/123456789/11552.

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Made available in DSpace on 2014-10-09T12:53:10Z (GMT). No. of bitstreams: 0<br>Made available in DSpace on 2014-10-09T13:58:56Z (GMT). No. of bitstreams: 0<br>Tese (Doutoramento)<br>IPEN/T<br>Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP
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42

Saukko, E. (Ekaterina). "Medical use of radiation in gastroenterology:optimising patient radiation exposure during endoscopic retrograde cholangiopancreatography (ERCP)." Doctoral thesis, Oulun yliopisto, 2018. http://urn.fi/urn:isbn:9789526221083.

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Abstract Fluoroscopically guided procedures are currently an area of special concern in relation to radiation protection, as they may produce a high radiation dose to patients and increase the risk of skin injury. ERCP is a gastrointestinal procedure used as a gold standard in the treatment of pancreatobiliary disorders. It is performed under endoscopic and fluoroscopic guidance. Recently, both the number and the complexity with associated increased technical difficulty of therapeutic ERCP procedures have significantly increased. The present study aimed to assess the medical use of radiation i
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43

Skiöld, Sara. "Radiation induced biomarkers of individual sensitivity to radiation therapy." Doctoral thesis, Stockholms universitet, Institutionen för molekylär biovetenskap, Wenner-Grens institut, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-97123.

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Fifty percent of solid cancers are treated with radiation therapy (RT). The dose used in RT is adjusted to the most sensitive individuals so that not more than 5% of the patients will have severe adverse healthy tissue effects. As a consequence, the majority of the patients will receive a suboptimal dose, as they would have tolerated a higher total dose and received a better tumor control. Thus, if RT could be individualized based on radiation sensitivity (RS), more patients would be cured and the most severe adverse reactions could be avoided. At present the mechanisms behind RS are not known
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44

Brunet-Benkhoucha, Malik. "Tomosynthesis-based intraoperative dosimetry for low dose rate prostate brachytherapy." Thesis, McGill University, 2009. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=32401.

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The aim of this study is to develop an intraoperative dose assessment procedure that can be performed after an I-125 prostate seed implantation, while the patient is still under anaesthesia. To accomplish this, we reconstruct the 3D position of each seed and co-register it with the prostate contour acquired with a transrectal ultrasound (TRUS) probe. Our seed detection method involves a tomosynthesis-based filtered reconstruction of the volume of interest requiring 7 projections acquired over an angle of
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45

Henriksson, Katja. "Strålskydd för nuklearmedicinsk personal som jobbar med Tc-99m: vikten av att använda blyförkläde, sprutskydd och distansverktyg." Thesis, Malmö universitet, Fakulteten för hälsa och samhälle (HS), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:mau:diva-25533.

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Inom nuklearmedicin exponeras personal dagligen för joniserande strålning. Det kan vara både i form av en öppen strålkälla vid uppdrag av radiofarmaka och vid bildtagning där personalen hjälper och ger stöd till patienten som blivit injicerad. Vid uppdrag av radiofarmaka används strålskydd i form av sprutskydd och distansverktyg medan blyförkläde används vid kontakt med patienter. Dessa skydd är till för att minska skador som kan uppstå vid exponering. Den svenska strålsäkerhetsmyndigheten (SSM) har föreskrivit dosgränser som inte får överskridas för att minska risken för skador. Teknetium-99m
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46

RODRIGUES, DEMERVAL L. "Otimizacao no controle dos valores de radiacao nas dependencias do ciclotron de 30 MeV do IPEN." reponame:Repositório Institucional do IPEN, 2002. http://repositorio.ipen.br:8080/xmlui/handle/123456789/11027.

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Made available in DSpace on 2014-10-09T12:47:07Z (GMT). No. of bitstreams: 0<br>Made available in DSpace on 2014-10-09T14:08:37Z (GMT). No. of bitstreams: 1 07969.pdf: 4735290 bytes, checksum: 35766584f698fd08a530a144cb0a0bd0 (MD5)<br>Dissertacao (Mestrado)<br>IPEN/D<br>Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP
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47

Ashton, Christopher D. "Total dose radiation test methodologies for advanced spacecraft electronics experiencing enhanced low dose rate sensitivity." Thesis, University of Surrey, 2016. http://epubs.surrey.ac.uk/810105/.

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The purpose of this thesis is to determine whether hydrogen can be implanted into elec- tronic components for the goal of investigating low ionising dose rate sensitivity, and using this to suggest whether hydrogen implantation can be used as an accelerated method to detect ELDRS (Enhanced Low Dose Rate Sensitivity) susceptability. Current ground testing methods for total ionising dose irradiate using cobalt-60 at dose rates greater than 10mGy(Si)/s up to 200Gy. It has been found that bipolar devices show an increased susceptibility to radiation induced damage at dose rates below 10mGy(Si)/s k
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FERREIRA, DANILO C. "Desenvolvimento e calibração de um sistema dosimétrico de rotina em processamento por irradiação." reponame:Repositório Institucional do IPEN, 2013. http://repositorio.ipen.br:8080/xmlui/handle/123456789/10593.

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Made available in DSpace on 2014-10-09T12:42:18Z (GMT). No. of bitstreams: 0<br>Made available in DSpace on 2014-10-09T14:00:08Z (GMT). No. of bitstreams: 0<br>Tese (Doutoramento)<br>IPEN/T<br>Instituto de Pesquisas Energeticas e Nucleares - IPEN-CNEN/SP
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Dong, Xiuqin. "Safety limit estimation for cataract induced by ultraviolet radiation /." Stockholm, 2005. http://diss.kib.ki.se/2005/91-7140-451-1/.

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Ozols, Agris. "Low-dose studies of genomic instability-mechanisms and targets." Thesis, Queen Mary, University of London, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.271260.

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