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Dissertations / Theses on the topic 'VMAF'

Author: Grafiati

Published: 21 February 2023

Last updated: 19 July 2025

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1

Smith, Jennifer Renee. "VIRGINIA TEACHERS' UTILIZATION OF VMFA RESOURCES: A SURVEY." VCU Scholars Compass, 2006. http://scholarscompass.vcu.edu/etd_retro/62.

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The focus of this thesis was to gather data by survey on the utilization of VMFA resources by Virginia, K-12 public and private school teachers. Currently there is a lack of research on how teachers utilize art museum resources. I sent a Web-based survey to 800 teachers in the state of Virginia. One hundred seventy six teachers responded and the data was analyzed to determine their backgrounds and utilization of VMFA resources. All data was entered into tables in both numerical form and percentages. My analysis of the data showed that teachers utilize resources most frequently for art hi

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2

Osewski, Wojciech. "Rekonstrukcja rozkładu dawki w technikach dynamicznych : IMRT i VMAT." Doctoral thesis, Katowice : Uniwersytet Śląski, 2013. http://hdl.handle.net/20.500.12128/5389.

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Techniki dynamiczne IMRT i VMAT umożliwiają bardzo precyzyjne modulowanie rozkładu dawki w objętości guza nowotworowego przy jednoczesnym oszczędzaniu tkanek zdrowych - struktur krytycznych. Z jednej strony dysponujemy bardzo precyzyjnym systemem planowania rozkładu dawki, z drugiej za realizację planu odpowiada aparat terapeutyczny, który „obarczony” jest tolerancją działania: mechaniczną i elektroniczną. Konieczna jest zatem weryfikacja zgodności rozkładu dawki zaplanowanego ze zrealizowanym - rzeczywistym. W radioterapii każdy plan leczenia musi być zweryfikowany, czy to przed realizacją

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3

Lafond, Caroline. "Analyse et optimisation des performances de la technique VMAT pour son utilisation en radiothérapie." Phd thesis, Université Rennes 1, 2013. http://tel.archives-ouvertes.fr/tel-00980181.

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La technique de radiothérapie VMAT (Volumetric Modulated Arc Therapy), diffusée en 2009, combine les avantages des techniques d'arc thérapie dynamique aux avantages des techniques de radiothérapie conformationnelle avec modulation d'intensité (RCMI) par faisceaux stationnaires. L'objectif de la thèse est de rendre optimales les conditions de mise en œuvre du VMAT autour d'un accélérateur linéaire d'électrons Synergy/Elekta afin de sécuriser la technique et de pouvoir bénéficier de l'apport clinique potentiellement attendu. Sur la base d'une analyse de l'influence des différents paramètres de l

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4

Campbell, Neil Alan. "The Effect of Maximum MLC Speed and Dose Rate Constraints on VMAT Plan Quality, Accuracy and Efficiency." Thesis, University of Canterbury. Physics and astronomy, 2013. http://hdl.handle.net/10092/8964.

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Volumetric modulated arc therapy (VMAT) is an efficient and conformal radiation therapy technique. It accomplishes this by dynamically varying multi-leaf collimator (MLC) positions, dose rates and gantry velocity. This work investigated the effect of varying the maximum MLC speed and maximum dose rate on the quality, efficiency and accuracy of treatment plans. The Pinnacle3 SmartArc treatment planning software was used to generate plans on prostate and head and neck (H&N) sites. A range of maximum MLC leaf speeds (0.55 cm/s to 2.20 cm/s) and maximum dose rates (200 MU/min to 600 MU/min) restri

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5

Cardoso, Maria João Dias. "Estudo dosimétrico para implementação da técnica radioterapêutica volumetric modulated arc therapy (VMAT)." Master's thesis, FCT-UNL, 2011. http://hdl.handle.net/10362/6978.

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Dissertação para obtenção do Grau de Mestre em Engenharia Biomédica<br>Volumetric Modulated Arc Therapy (VMAT) é uma técnica de radioterapia externa em arco que conjuga simultaneamente a modulação da intensidade do feixe conseguida com colimador multilâminas (MLC) dinâmico, com a variação da taxa de dose e da velocidade de rotação da gantry. Neste trabalho realizou-se um estudo para implementar esta técnica em modo clínico. Analisou-se a estabilidade do output do AL e constatou-se que posicionando a gantry a 180° se obtinha a maior variação do outupt em relação ao output medido com a gantry

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6

Silva, Ricardo Goulart da. "Desenvolvimento de um programa de controle da qualidade para a tecnologia VMAT." Universidade Tecnológica Federal do Paraná, 2013. http://repositorio.utfpr.edu.br/jspui/handle/1/727.

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A radioterapia moderna continua evoluindo e trazendo mudanças tecnológicas que envolvem novas modalidades de imagem, novos acessórios de imobilização e novos sistemas para a entrega da dose. Esses avanços possibilitam reduzir a dose recebida pelos tecidos sadios e, consequentemente, diminuem o risco de toxicidade e morbidade. Ao mesmo tempo, maiores doses podem ser prescritas para os volumes tumorais, o que aumenta a probabilidade de controle locorregional. Técnicas tradicionais de IMRT oferecem todas essas vantagens, porém, o tempo de cada sessão de tratamento costuma ser muito longo, princip

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7

Naujalytė, Reda. "Elektroninis mokymas(is) pradinėje mokykloje: situacijos ir poreikio analizė." Master's thesis, Lithuanian Academic Libraries Network (LABT), 2012. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2012~D_20120806_130448-68026.

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Elektroninis mokymas(is) pradiniame ugdyme turi didžiulį potencialą, todėl būtina įvertinti jo teikiamas galimybes. Tikslinga sukurti ir plėtoti modernią, kokybišką ir patrauklią virtualią erdvę, kurioje el.mokymas(is) atitiktų naujovišką pedagogiką bei derėtų su naujomis skaitmeninėmis technologijomis.<br>E-learning in primary education has huge potential, thus it is necessary to assess it. It is appropriate to establish and develop a modern, high quality and attractive virtual space of primary education, where e-learning would go side by side with innovative pedagogy and new technologies.

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8

Maurel, Agnès. "Monoamine oxydases rénales et cardiaques : implications physiopathologiques." Paris 7, 2004. http://www.theses.fr/2004PA077127.

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9

Barber, Jeffrey Thomas. "Aspects of Complexity in Radiotherapy from Beam Modulation and Image Registration." Thesis, University of Sydney, 2020. https://hdl.handle.net/2123/22828.

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Radiotherapy is becoming much more precise due to the ability to plan irregular dose deposition volumes, and improved internal imaging during treatment. However, implementing these tools in a manner that improves overall quality of treatment planning and delivery is difficult and there are many unknown factors. This work identifies and quantifies uncertainties related to the technologies of VMAT and Image registration. This ties several related aspects together to investigate adaptive, personalised radiotherapy, for VMAT treatments in particular. These are: a national survey of current IMRT a

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10

Sholar, Gregory A. "Evaluating the use of lower VMA requirements for superpave mixtures." [Gainesville, Fla.] : University of Florida, 2004. http://purl.fcla.edu/fcla/etd/UFE0008942.

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11

Rossi, Eleonora. "Dosimetric characterization of GafChromic EBT3 films in Volumetric Modulated Arc Therapy (VMAT) radiotherapy treatments." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2017. http://amslaurea.unibo.it/14245/.

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Questo lavoro di tesi, svolto presso l'Unità Operativa di Radioterapia dell'Ospedale Bellaria di Bologna, si pone l'obiettivo di caratterizzare dosimetricamente i film radiocromici GafChromic EBT3 al fine di implementarne l'utilizzo clinico nell'ambito dei controlli di qualità su piani di trattamento radioterapici VMAT (Volumetric Modulated Arc Therapy). I controlli di qualità per trattamenti VMAT sono attualmente effettuati grazie ad un sistema fantoccio-detector a camere a ionizzazione, Octavius 4D, in grado di ricostruire in maniera accurata la distribuzione di dose tridimensionale deposita

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12

Medhi, Darpan K. "The repair of DSBs catalyzed by VMA1 derived endonuclease by homologous recombination during meiosis." Thesis, University of Sheffield, 2013. http://etheses.whiterose.ac.uk/5721/.

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Homologous recombination (HR) during meiosis is initiated by programmed DNA double strand breaks (DSBs). Some of these DSBs are repaired to give crossovers (COs), which connect maternal and paternal homologous chromosomes and thus ensure proper segregation during meiosis I. In contrast, HR in mitotic cells forms mostly noncrossovers (NCOs); this prevents deleterious genome rearrangement and loss of heterozygosity. Therefore, meiotic HR is regulated to enrich for COs, but much remains to be understood regarding the basis of this regulation. Meiotic cells express unique HR proteins, and these gl

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13

Stambaugh, Cassandra. "The Evaluation and Study of Modern Radiation Dosimetry Methods as Applied to Advanced Radiation Therapy Treatments Using Intensity Modulated Megavoltage Photon Beams." Scholar Commons, 2015. https://scholarcommons.usf.edu/etd/5587.

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The purpose of this work is to evaluate quasi-3D arrays for use with intensity modulated radiation therapy (IMRT) and volumetric modulated arc therapy (VMAT) and to determine their clinical relevance. This is achieved using a Delta4 from Scandidos and ArcCheck from Sun Nuclear and the associated software. While certain aspects of these devices and software have been previously evaluated, the main goal of this work is to evaluate the new aspects, such as reconstructing dose on a patient CT set, and extending the capabilities. This includes the capability to reconstruct the dose based on a helic

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14

Abdul, Hadi Talal. "La mesure et la modélisation des faisceaux de photons de petite taille pour l'IMRT et la radiochirurgie." Thesis, Toulouse 3, 2017. http://www.theses.fr/2017TOU30056/document.

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Les nouvelles techniques de la radiothérapie (Stéréotaxie, IMRT, VMAT, IGRT...etc) utilisent des faisceaux de photons de très petite taille (mini-faisceaux) dans le cas de petite tumeur, au cerveau par exemple, afin d'irradier précisément la lésion. En effet, leur taille de champ est inférieure à 3cm×3cm à 100 cm de la source de rayonnement, cependant la mesure de la dose dans les mini-faisceaux est caractérisée par de forts gradients de dose et un manque d'équilibre électronique latéral, nécessitant l'utilisation de détecteurs ayant un volume sensible et une résolution spatiale adaptés, avec

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15

Villani, Daniel. "Avaliação de dosímetros de óxido de alumínio pela técnica OSL na dosimetria de campos de fótons clínicos utilizados no tratamento radioterápico em arco modulado volumétrico." Universidade de São Paulo, 2017. http://www.teses.usp.br/teses/disponiveis/85/85131/tde-06062017-144047/.

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O tratamento utilizando Radioterapia em Arco Modulado Volumétrico é a modalidade mais moderna de radioterapia conformacional de forma que, com superposição de vários campos, as distribuições de dose forneçam uma perfeita conformação ao tumor, diminuindo a probabilidade de complicações nos tecidos normais adjacentes. Nesse sentido, muitos esforços estão sendo investidos para melhorar a conformidade de distribuição de dose, bem como a integração de técnicas de imagem para rastreamento de tumores e correção de variações inter e intrafração. Para isso, um intenso acompanhamento da qualidade dos pr

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16

Galloni, Elena. "Valutazione dosimetrica e aspetti tecnici di trattamenti VMAT (Volumetric Modulated Arc Therapy) in radioterapia oncologica." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2016. http://amslaurea.unibo.it/11137/.

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La VMAT (Volumetric Modulated Arc Therapy) è una delle più recenti tecniche radioterapiche, in cui, oltre alla modulazione geometrica della fluenza del campo di radiazione come avviene nell’IMRT (Intensity Modulated Radiotherapy), sono variati durante il trattamento anche la velocità del gantry e il rateo di dose. La radiazione è erogata senza interruzioni lungo uno o più archi continui della testata dell’acceleratore, così da ridurre i tempi di trattamento in modo sostanziale rispetto all’IMRT. Nelle tecniche ad intensità modulata, ed in particolare nella VMAT, il lettino porta paziente mod

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17

Basso, Hellem Cristine de Souza. "Avaliação da influência dosimétrica dos implantes dentários de titânio em VMAT de cabeça e pescoço." Universidade Tecnológica Federal do Paraná, 2015. http://repositorio.utfpr.edu.br/jspui/handle/1/1422.

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O câncer de cabeça e pescoço tem maior prevalência em homens, predominantemente de meia ou terceira idade, caracterizando um grupo de indivíduos com grande probabilidade em ter realizado implantes dentários ósseointegrados. A maior parte desses implantes é feito de titânio e a interação dos fótons de raios X com esse material de alto número atômico e elevada densidade eletrônica gera grande espalhamento de radiação e perturbação de dose nas suas interfaces, gerando incertezas dosimétricas nos tratamentos de radioterapia de cabeça e pescoço. O objetivo desse estudo é avaliar a influência dosimé

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18

Bhagaloo, Visham. "Volumetric modulated Arc Therapy versus 3D conformal radiotherapy in the treatment of locally advanced cervical cancer. A single institution, comparative dosimetric study." Master's thesis, Faculty of Health Sciences, 2021. http://hdl.handle.net/11427/32601.

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Background: External Beam Radiotherapy is essential in the management of locally advanced cervical cancer (LACC). Generally, VMAT is thought to achieve higher conformity to the Planned Target Volume (PTV) and better sparing of organs at risk (OAR) when compared to 3D-CRT. This study focused on these principles as it applied to treatment and potential toxicity in the management of LACC. Aim: To compare dosimetric parameters between VMAT and 3D-CRT in the management of LACC. Setting: The study analysed patients treated at Groote Schuur Hospital between May and December 2017. Method: A non-random

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19

Yildirim, Ali [Verfasser]. "Bestimmung der Parameter Km und Vmax der Michaelis-Menten-Kinetik auf Basis der Versuchsplanung / Ali Yildirim." Hannover : Technische Informationsbibliothek und Universitätsbibliothek Hannover, 2010. http://d-nb.info/1008594180/34.

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20

Dybwad, Anniken. "Comparison of Dose Distributions resulting from IMRT and VMAT, and Assessment of MLC Leaf Positioning Errors." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for fysikk, 2013. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-22432.

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Intensity-modulated radiotherapy (IMRT) is a radiation technique used in the treatment of head-and-neck cancer patients. IMRT results in a dose distribution which conforms to the tumor volume(s), and therefore sparing surrounding normal tissue. However, the radiation delivery is relatively time consuming. Volumetric modulated arc therapy (VMAT) on the other hand, has a radiation delivery time down to one third compared to that of IMRT (depending on number of arcs, arc lengths etc.). This shortened treatment time will allow more treatments per day, and a decrease in discomfort which may be exp

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Alhazmi, Abdulaziz [Verfasser], and Katia [Akademischer Betreuer] Parodi. "EPID-based 3D dosimetry for pre-treatment IMRT/VMAT quality assurance / Abdulaziz Alhazmi ; Betreuer: Katia Parodi." München : Universitätsbibliothek der Ludwig-Maximilians-Universität, 2018. http://d-nb.info/1174143045/34.

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22

Vidaurre, Francisca Belen Correas. "Dosedekning til uterus i pasienter med cervix cancer som gjennomgår ekstern stråleterapi : VMAT vs. 4 felts boksteknikk." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for fysikk, 2013. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-22435.

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Formålet med denne oppgaven var å undersøke den interfraksjonelle organbevegelsenav øvre del av uterus i pasienter med intakt uterus som gjennomgår eksternstråleterapi som en del av den kurative behandlingen mot cervix cancer. Ovre delav uterus antas å være den mest mobile delen av organet.Det kliniske målvolumet (CTV) for stråleterapi inneholder hele uterusvolumet.Organbevegelsen av den øvre delen av uterus kan dermed degradere nøyaktighetenav behandlingen avhengig av behandlingsteknikk. Det er ønskelig å bruke teknikkermed

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23

Gozbasi, Halil Ozan. "Optimization approaches for planning external beam radiotherapy." Diss., Georgia Institute of Technology, 2010. http://hdl.handle.net/1853/34726.

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External beam radiotherapy is delivered from outside the body aimed at cancer cells to damage their DNA making them unable to divide and reproduce. The beams travel through the body and may damage nearby healthy tissues unless carefully planned. Therefore, the goal of treatment plan optimization is to find the best system configuration to deliver sufficient dose to target structures while avoiding damage to healthy tissues. This thesis investigates optimization approaches for two external beam radiation therapy techniques: Intensity-Modulated Radiation Therapy (IMRT) and Volumetric-Modulate

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Kawamura, Mitsue. "A scoring system predicting acute radiation dermatitis in patients with head and neck cancer treated with intensity-modulated radiotherapy." Kyoto University, 2019. http://hdl.handle.net/2433/244519.

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Ahmed, Saeed. "Development and Validation of Advanced Techniques for Treatment Planning and Verification in Megavoltage Radiotherapy." Scholar Commons, 2019. https://scholarcommons.usf.edu/etd/7721.

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The aim of this work is primarily to validate the advanced techniques for treatment planning and dosimetric verification for modern megavoltage x-ray radiotherapy. With the advent of modern radiotherapy techniques, there is a great need for assuring quality of the radiation dose distributions generated by the advanced intensity modulated treatments (IMRT/VMAT). This is typically accomplished by the assessment of the treatment plan quality at the planning stage and then verification of the dose distributions through measurements on the phantoms or independent dose calculations prior to the act

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Belda, Ortega Román. "Mejora del streaming de vídeo en DASH con codificación de bitrate variable mediante el algoritmo Look Ahead y mecanismos de coordinación para la reproducción, y propuesta de nuevas métricas para la evaluación de la QoE." Doctoral thesis, Universitat Politècnica de València, 2021. http://hdl.handle.net/10251/169467.

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[ES] Esta tesis presenta diversas propuestas encaminadas a mejorar la transmisión de vídeo a través del estándar DASH (Dynamic Adaptive Streaming over HTTP). Este trabajo de investigación estudia el protocolo de transmisión DASH y sus características. A la vez, plantea la codificación con calidad constante y bitrate variable como modo de codificación del contenido de vídeo más indicado para la transmisión de contenido bajo demanda mediante el estándar DASH. Derivado de la propuesta de utilización del modo de codificación de calidad constante, cobra mayor importancia el papel que juegan los a

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Teke, Tony. "Monte Carlo techniques for patient specific verification of complex radiation therapy treatments including TBI, VMAT and SBRT lung." Thesis, University of British Columbia, 2012. http://hdl.handle.net/2429/42309.

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The main objective of this thesis is to develop Monte Carlo (MC) techniques for verification of complex radiation therapy treatments with emphasis on total body irradiation (TBI) and Volumetric modulated arc therapy (VMAT). This work was motivated by an initial study including ten non-small cell lung cancer (NSCLC) patients which evaluated the dosimetric consequences of plans optimized using the treatment planning system (TPS) by recalculating them with MC. It was shown that poor modelling of electronic disequilibrium by the TPS lead to underdosage of the planning target volume (PTV) and that

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Satherley, Thomas William Scott. "The impact of plan complexity on the accuracy of VMAT for the treatment of head and neck cancer." Thesis, University of Canterbury. Physics, 2015. http://hdl.handle.net/10092/10584.

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Purpose: At the Wellington Blood and Cancer Centre (WBCC), Volumetric Modulated Arc Therapy (VMAT) is used to treat a variety of head and neck (H&N) cancers. Presently, the complexity of plans is limited to ensure the accuracy of patient treatment within the range of the departmental experience. The complexity limitation is applied through use of a monitor unit (MU) constraint during plan optimisation. Plans of higher complexity can be obtained by loosening the MU constraint, and setting more stringent optimisation objectives on organs at risk (OAR) and target volumes (PTV). This could potenti

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Prandini, Tâmara Heloísa Rocha [UNESP]. "Pesquisa dos inteins VMA e THRRS em leveduras do gênero Candida isoladas de hemocultura." Universidade Estadual Paulista (UNESP), 2012. http://hdl.handle.net/11449/87788.

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Made available in DSpace on 2014-06-11T19:23:01Z (GMT). No. of bitstreams: 0 Previous issue date: 2012-02-29Bitstream added on 2014-06-13T20:29:34Z : No. of bitstreams: 1 prandini_thr_me_botib.pdf: 557611 bytes, checksum: d3fc30980a3b1907390cb1a9dcc2047b (MD5)<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)<br>Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)<br>Leveduras do gênero Candida são consideradas os principais agentes de micoses sistêmicas oportunistas, que aumentaram nas duas últimas décadas, devido ao número cada vez maior de hospedeiros com alg

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Prandini, Tâmara Heloísa Rocha. "Pesquisa dos inteins VMA e THRRS em leveduras do gênero Candida isoladas de hemocultura /." Botucatu, 2012. http://hdl.handle.net/11449/87788.

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Orientador: Eduardo Bagagli<br>Coorientador: Raquel Cordeiro Theodoro<br>Banca: Robson Francisco Carvalho<br>Banca: Renata Castiglioni Pascon<br>Resumo: Leveduras do gênero Candida são consideradas os principais agentes de micoses sistêmicas oportunistas, que aumentaram nas duas últimas décadas, devido ao número cada vez maior de hospedeiros com algum grau de comprometimento do sistema imune. Diferentes espécies podem apresentar diferentes perfis clínico-epidemiológicos, assim, um maior conhecimento do perfil molecular e uma correta identificação dos isolados faz-se necessária. Com o sequencia

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Šiškevičiūtė, Daiva. "Virtualių mokomųjų aplinkų lokalizavimas." Master's thesis, Lithuanian Academic Libraries Network (LABT), 2006. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2006~D_20060613_193007-95799.

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The work consists of two parts. The first part describes the survey of student opinions on the Virtual Learning Environment. The research helps us see how attractive different possibilities among students are as regards the Virtual Learning Environment and what positive influence the said possibilities bring on the learning process. The research can also be helpful to teachers creating virtual learning courses in singling out the possibilities to focus on. Teaching material of the theory of algorithms presented within the open code of the Virtual Learning Environment “Moodle” was used for the

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Hartmann, Olaf [Verfasser]. "Die Totalsynthesen von Aurafuron A and [beta]-Lipomycin sowie Beiträge zur diastereodivergenten vinylogen Mukaiyama-Aldol-Reaktion (VMAR) / Olaf Hartmann." Hannover : Technische Informationsbibliothek und Universitätsbibliothek Hannover (TIB), 2013. http://d-nb.info/1044647795/34.

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Ji, Jing. "Sex Differences of Neurotransporters Within the Nigrostriatal Dopaminergic System." Kent State University / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=kent1227327111.

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Dance, Michael Joseph. "A Comparative Analysis for Verification of IMRT and VMAT Treatment Plans using a 2-D and 3-D Diode Array." University of Toledo Health Science Campus / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=mco1404933070.

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Nutti, Anders, and Mats Ekman. "Analys av en meddelandetjänst vid krissituationer baserat på CBS-tekniken(Cell Broadcast Service)." Thesis, Högskolan Dalarna, Informatik, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:du-466.

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Uppdragsgivare för detta examensarbete är Länsstyrelsen Dalarna. Målet är att undersöka hur lämplig tekniken med CBS (Cell Broadcast Service) baserade textmeddelande är vid viktigt meddelande till allmänheten (VMA-larm). En tjänst som utnyttjar CBS-tekniken kan rädda liv om allmänheten i ett tidigt skede får reda på vad som hänt och vart de ska bege sig.Rapporten visar på hur man kan använda SMS då en krissituation uppstår. Med hjälp av CBS-tekniken skickas meddelandet till specifikt valda basstationer och alla mobiltelefoner som är uppkopplade mot den. Det positiva är att bara de som behöver

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Hilty, Jeremy S. "Iron Acquisition and Homeostasis in Histoplasma capsulatum." University of Cincinnati / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1220026153.

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Bennett, Lewis Peter. "Sacred repertoires in Paris, 1630-43 : Paris, BibliotheÌ€que National de France, Vma reÌs.571." Thesis, University of Oxford, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.413015.

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Walker, Justin A. "The Use of an On-Board MV Imager for Plan Verification of Intensity Modulated Radiation Therapy and Volumetrically Modulated Arc Therapy." University of Toledo Health Science Campus / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=mco1372701428.

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Zarpellon, Alessandro. "Platelet interactions with a-thrombin and serotonin." Doctoral thesis, Università degli studi di Padova, 2008. http://hdl.handle.net/11577/3425112.

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The aim of the first part of this thesis was to study platelets from people with essential thrombocytosis. Platelets from ET patients present several abnormalities. We focused on the abnormalities related with serotonin, in particular we wanted : 1) to determine the sub-cellular distribution of the neurotransmitter 2) to evaluate 5-HT transport in platelets either untreated or pre-incubated with reserpine, a known inhibitor of serotonin transport inside the dense granules 3) to establish whether the decreased accumulation of serotonin in pathological platelets was due to a decreased numb

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Sasaki, Makoto. "Variation in accumulated dose of volumetric-modulated arc therapy for pancreatic cancer due to different beam starting phases." Kyoto University, 2020. http://hdl.handle.net/2433/253226.

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Dukay, Maria. "Anatomiska och funktionella resultat efter behandling av vitreomakulär traktion/adhesion (VMA/VMT) med vitrektomi eller ocriplasmin (Jetrea®)." Thesis, Örebro universitet, Institutionen för medicinska vetenskaper, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:oru:diva-93319.

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Background: Vitrectomy is a well-accomplished method for treatment of vitreomacular traction. In 2013, a new approach for treating symptomatic vitreomacular traction was presented, ocriplasmin (Jetrea®), that could perform enzymatic vitreolysis. In this study ocriplasmin was studied to compare the treatment results with the standard method vitrectomy. Aim: The purpose of this study was to compare vitrectomy to ocriplasmin-injection for treatment of vitreomacular traction performed between 2013 and 2016. Materials and methods: The medical records of 16 patients were reviewed. Eight of them were

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Younan, Fouad. "Reconstruction de la dose absorbée in vivo en 3D pour les traitements RCMI et arcthérapie à l'aide des images EPID de transit." Thesis, Toulouse 3, 2018. http://www.theses.fr/2018TOU30333/document.

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Cette thèse a été réalisée dans le cadre de la dosimétrie des faisceaux de haute énergie délivrés au patient pendant un traitement de radiothérapie externe. L'objectif de ce travail est de vérifier que la distribution de dose 3D absorbée dans le patient est conforme au calcul réalisé sur le système de planification de traitement (TPS) à partir de l'imageur portal (en anglais : Electronic Portal Imaging Device, EPID). L'acquisition est réalisée en mode continu avec le détecteur aS-1200 au silicium amorphe embarqué sur la machine TrueBeam STx (VARIAN Medical system, Palo Alto, USA). Les faisceau

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Colbert, Caroline M. "Construction of a model for the improved planning of MCO-informed VMAT in RayStation using a knowledge base of clinical IMRT-MCO treatment plans." Thesis, Massachusetts Institute of Technology, 2017. http://hdl.handle.net/1721.1/112375.

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Thesis: S.B., Massachusetts Institute of Technology, Department of Nuclear Science and Engineering, 2017.<br>This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.<br>Cataloged from student-submitted PDF version of thesis.<br>Includes bibliographical references (pages 51-53).<br>Intensity Modulated Radiation Therapy (IMRT) is a type of external beam radiation therapy that has proven effective at treating many cancers. A related therapy type, Volumetric Modulated Arc Therapy (VMAT), has the potential to

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Bejarano, Buele Ana Isabel. "Comparison of Radiation Treatment Plans for Breast Cancer between 3D Conformal in Prone and Supine Positions in Contrast to VMAT and IMRT Supine Positions." University of Toledo Health Science Campus / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=mco1449854456.

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Fontaine, Felica [Verfasser], and Rüdiger [Akademischer Betreuer] Korbel. "Untersuchungen zur „Compliance” und Adhärenz von Vogelbesitzern in der tiermedizinischen Therapie mit Entwicklung einer „Veterinary Medication Adherence Scale” (VMAS) / Felica Fontaine ; Betreuer: Rüdiger Korbel." München : Universitätsbibliothek der Ludwig-Maximilians-Universität, 2020. http://d-nb.info/1213246008/34.

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Della, Gala Giuseppe. "A method for automated generation of radiotherapy treatment plans for lung cancer." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2015. http://amslaurea.unibo.it/9549/.

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La radioterapia è una tecnica molto impiegata per la cura del cancro. Attualmente la somministrazione avviene principalmente attraverso la intensity modulated radiotherapy (IMRT, sovrapposizione di campi ad intensità modulata), un cui sviluppo recente è la volumetric modulated arc therapy (VMAT, irradiazione continua lungo un arco ininterrotto). La generazione di piani richiede esperienza ed abilità: un dosimetrista seleziona cost functions ed obiettivi ed un TPS ottimizza la disposizione dei segmenti ad intensità modulata. Se il medico giudica il risultato non soddisfacente, il processo ripar

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CURTO, DENISE. "Dosimetric feasibility study of Total Body Irradiation treatment with Volumetric Modulated Arc Therapy technique." Doctoral thesis, Università degli Studi di Milano, 2022. https://hdl.handle.net/2434/945791.

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Introduction: Total Body Irradiation (TBI) is a radiotherapy treatment prescribed for patients with different form of leukaemia. It is part of conditioning regimen for hematopoietic stem cell transplantation and different techniques can be adopted to deliver TBI treatment. The conventional method consists of two static either lateral (LAT) or anterior-posterior/posterior-anterior (AP/PA) opposed photon beams, delivered with a linear accelerator (LINAC) at an extended source-surface distance, so as to cover the entire patient’s body with the fields. Developments on linear accelerator and multi-

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Ashida, Ryo. "Impact of interfractional anatomical variation and setup correction methods on interfractional dose variation in IMPT and VMAT plans for pancreatic cancer patients: A planning study." Doctoral thesis, Kyoto University, 2020. http://hdl.handle.net/2433/259002.

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京都大学<br>0048<br>新制・課程博士<br>博士(医学)<br>甲第22734号<br>医博第4652号<br>新制||医||1046(附属図書館)<br>京都大学大学院医学研究科医学専攻<br>(主査)教授妹尾浩, 教授増永慎一郎, 教授川口義弥<br>学位規則第4条第1項該当<br>Doctor of Medical Science<br>Kyoto University<br>DFAM

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Centeno, Ramos José Antonio. "Análisis comparativo entre las técnicas de tratamiento 3D CRT y VMAT en cáncer de mama con compromiso supraclavicular utilizando los sistemas de planificación XIO y MONACO." Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2021. https://hdl.handle.net/20.500.12672/16101.

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El cáncer de mama es la neoplasia maligna más común en mujeres de todo el mundo y se estima un aumento de nuevos casos debido a una detección tardía y/o falta de diagnostico; debido a ello, en la actualidad existen diversas técnicas como la radioterapia, para el tratamiento de dicha neoplasia. El objetivo de este proyecto es realizar un análisis comparativo entre las técnicas de tratamiento en radioterapia convencional 3D (3D CRT) y la terapia volumétrica de arcos modulados (VMAT) para el cáncer de mama izquierdo con compromiso axilo-supraclavicular. En la elaboración del proyecto se uti

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Pranckutė, Danutė. "Virtualaus mokymo aplinkos pritaikymas informatikos studijoms." Master's thesis, Lithuanian Academic Libraries Network (LABT), 2011. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2011~D_20110615_120556-65212.

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Šių laikų studentai nuotolines arba pusiau nuotolines studijas vertina ypač teigiamai. Patiems dėstytojams nebelieka kito pasirinkimo, kaip rengti savo studijų dalykus virtualiose mokymo/si aplinkose. Šio darbo tikslas yra pritaikyti virtualaus mokymo aplinką informatikos studijoms. Pagrindiniai uždaviniai – išanalizuoti dėstytojų poreikius; poreikių padengimą tradicinėmis Moodle priemonėmis ir papildomais moduliais; suformuoti eksperimentinę Moodle sistemą su įdiegtais papildiniais; sukurti tipinių dalykų grupių prototipus pateikimui Moodle sistemoje. Darbe analizuojama problema: virtuali mok

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