Academic literature on the topic 'Radiotherapy and oncology'

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Dissertations / Theses on the topic "Radiotherapy and oncology"

1

Short, Wesley A. "Evaluating the Dosimetric Accuracy of Small Gating Windows in Radiotherapy." University of Toledo Health Science Campus / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=mco152538625156708.

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2

Rojas, Callejas Ana Maria. "ARCON in experimental and clinical radiotherapy." Doctoral thesis, Umeå : Univ, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-207.

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3

Land, Imke. "The delivery limitations of adaptive radiotherapy systems." Thesis, University of Warwick, 2009. http://wrap.warwick.ac.uk/2276/.

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Organ motion - whether due to respiration, cardiac motion or digestive processes - is one of the major problems in external beam radiotherapy as it limits the achievable precision in dose delivery. Adaptive radiotherapy (ART) is a novel approach for a more precise dose delivery where measured patient-specific variations are used to change the delivery pattern throughout the treatment course. The aim of the work described in this thesis has been to contribute to the progress of ART by developing dynamic phantoms for the simulation of target motion, evaluating adaptive treatment strategies, and
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4

Abdelhamid, S. "Respiratory motion modelling and predictive tracking for adaptive radiotherapy." Thesis, Coventry University, 2010. http://curve.coventry.ac.uk/open/items/f135cb12-e9f9-1e4f-9c57-6de2fc378069/1.

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External beam radiation therapy (EBRT) is the most common form of radiation therapy (RT) that uses controlled energy sources to eradicate a predefined tumour volume, known as the planning target volume (PTV), whilst at the same time attempting to minimise the dose delivered to the surrounding healthy tissues. Tumours in the thoracic and abdomen regions are susceptible to motion caused mainly by the patient respiration and movement that may occur during the treatment preparation and delivery. Usually, an adaptive approach termed adaptive radiation therapy (ART), which involves feedback from ima
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5

Curtin-Savard, Arthur. "Dose delivery uncertainty in photon beam radiotherapy." Thesis, McGill University, 1995. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=22856.

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It is known that slight variations in total dose delivered to the patient in external beam photon radiotherapy can significantly alter the probability of tumour control. For this reason, ICRU has recommended a goal of $ pm$5% precision in the dose delivery to the target volume. Several investigators have analyzed the degree of precision routinely achieved and have come to the conclusion that ICRU's goal can be attained, but in practice this is just barely so.<br>We have measured the degree of precision which exists in our institution by examining each step of the radiotherapy process on a coba
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6

Rhodes, Charles Ray III. "Development of an Automated Program for Calculating Radiation Shielding in a Radiotherapy Vault." University of Toledo Health Science Campus / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=mco1331557547.

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7

Muirhead, Rebecca. "The optimization of image guided radiotherapy in lung cancer." Thesis, University of Glasgow, 2011. http://theses.gla.ac.uk/2711/.

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The hypothesis of this work was whether IGRT could be safely implemented for clinical use in a busy oncology centre. I aimed to study a number of questions that remain unresolved in the current literature regarding safe and optimised implementation of IGRT techniques. The first study undertaken was the calculation of a local set up margin using two widely recognised margin recipes. This involved the assessment and analysis of multiple images belonging to 100 patients. This allowed progression onto the next project which was assessment of the optimal safe method of delineation of 4DCT. The most
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Vos, Andre. "Determination of an optimal treatment margin for intracranial tumours treated with radiotherapy at Groote Schuur Hospital." Master's thesis, Faculty of Health Sciences, 2021. http://hdl.handle.net/11427/33076.

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Background Accurate delivery of radiotherapy is a paramount component of providing safe oncological care. Margins are applied when planning radiotherapy to account for subclinical tumour spread, physiological movement and set-up error. Set-up error is unique to each radiotherapy institution and should be calculated for each organ site to ensure safe delivery of treatment. Aim and setting The aim of this study is to calculate the random and systematic set-up error for a cohort of patients with intracranial tumours treated with 3D Conformal Radiotherapy at the Department of Radiation Oncology, G
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9

Vedam, Subrahmanya. "Management of Respiratory Motion in Radiation Oncology." VCU Scholars Compass, 2002. http://scholarscompass.vcu.edu/etd_retro/162.

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Respiratory motion poses significant problems in the radiotherapy of tumors located at sites (lung, liver, pancreas, breast) that are affected by such motion. Effects of respiratory motion on the different stages of the radiotherapy process (imaging, treatment planning and treatment delivery), has formed the focus of significant research over the last decade. Results from such research have revealed that respiratory motion affects the instantaneous position of almost all structures in the thorax and abdomen to different degrees based on their corresponding anatomic location and muscular attach
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10

Sansourekidou, Patricia. "Accessibility of Innovative Services in Radiation Oncology." ScholarWorks, 2019. https://scholarworks.waldenu.edu/dissertations/7738.

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The field of radiation oncology (RO) involves the use of highly advanced techniques to treat cancer and safely spare healthy organs. The discipline has experienced rapid growth in the past 25 years, with technological advancement as the driving force. Available data and an instrument to effectively measure the accessibility of innovation in the field were lacking. The purpose of this study was to investigate the accessibility of innovative services in RO in the United States and assess possible diffusion patterns. Two hundred and forty medical physicists practicing in RO in the United States c
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