Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 13 of 13 for “"Volumetric modulated arc therapy"”.
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Volumetric Modulated Arc Therapy Evaluation With The Radiological Physics Center Head and Neck Phantom
… calculation accuracy is essential for new radiotherapy techniques, including volumetric modulated arc therapy (VMAT). VMAT delivers intensity modulated radiotherapy treatments while simultaneously rotating the gantry, adding an additional level of complexity to both the dose calculation and …
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Risk of Second Malignant Neoplasms Following Proton Arc Therapy and Volumetric Modulated Arc Therapy For Prostate Cancer
… neoplasms (SMNs) following prostate radiotherapy is a concern due to the large population of survivors and decreasing age at diagnosis. It is known that parallel-opposed beam proton therapy carries a lower risk than photon IMRT. However, a comparison of SMN risk following proton and photon …
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Volumetric modulated Arc Therapy versus 3D conformal radiotherapy in the treatment of locally advanced cervical cancer. A single institution, comparative dosimetric study
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 …
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Dosimetric comparison of volumetric modulated arc therapy and three dimensional conformal radiotherapy in the adjuvant setting for the management of gastric cancer : target volume coverage and normal tissue sparing
Whilst the benefit of adjuvant radiotherapy in gastric cancer is known, the optimal means of delivery, including two dimensional conventional, three dimensional conformal radiotherapy, intensity modulated radiotherapy and volumetric modulated arc therapy is less certain. The purpose of this study …
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Construction of a model for the improved planning of MCO-informed VMAT in RayStation using a knowledge base of clinical IMRT-MCO treatment plans
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 provide comparable dose coverage to tumor sites while better sparing …
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Vliv výběru typu a energie fotonového svazku na ozařovací plán při zevní radioterapii karcinomu děložního hrdla
… beam energy selection on the quality of radiotherapy treatment plans for cervical cancer. The aim of the thesis was to compare the dosimetric characteristics of treatment plans created using different photon beam energies. A total of 40 patients were included in the analysis. For each patient, …
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CHARACTERIZATION OF BREAST RT TREATMENT BY MULTI-INSTITUTIONAL AI-KNOWLEDGE-BASED PLANNING OPTIMIZATION MODELS
… particularly the heart, in breast cancer radiotherapy. The goal is to enable physicists to quickly assess, via computed tomography (CT), whether a tangential field plan is adequate or if alternative techniques, such as breath-hold CT or Volumetric Modulated Arc Therapy (VMAT), are necessary to …
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Radiotherapy for head and neck paragangliomas: A 10 year retrospective review 2005-2014 at Groote Schuur Hospital and UCT Private academic hospital
… increasing evidence that radiosurgery and radiotherapy management of skull-base paragangliomas is as effective as microsurgical resection and carries less morbidity. This 10 year retrospective review of 24 patients in a single institution, treated over 10 years assesses tumour control rates and …
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Development of 3D-Printed Patient Specific Bolus For Clinical Use In to tal Scalp Irradiation
… irradiation (TSI) is a specialized radiation therapy technique that aims to deliver a uniform dose to the entire scalp. Original electron-based TSI techniques had limited homogeneity due to hot and cold spots created at field junctions due to the multiple matched fields that were required to …
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Intelligent Automatic Treatment Planning for Radiation Therapy
Radiation therapy (RT) utilizes high-energy radiation to disrupt the DNA of cancer cells, impeding their repair and division, ultimately causing cancer cell death. The goal of RT is to spare radiation dose to healthy cells while maintaining the dose to cancer cells. Modern RT employs advanced …
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Automation of Radiation Treatment Planning For Cervical Cancer
… including 2D 4-field-box, 3D conformal radiation therapy (3D-CRT), and volumetric-modulated arc therapy (VMAT). We also automated the field-in-field (FIF) technique to reduce hotspots in the automatically generated 4-field-box and 3D-CRT plans. Each beam delivery technique was evaluated on 35 …
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Evaluation of an End-to-End Radiotherapy Treatment Planning Pipeline for Prostate Cancer
… crucial and time-intensive process in radiation therapy. This planning involves carefully designing a treatment regimen tailored to a patient’s specific condition, including the type, location, and size of the tumor with reference to surrounding healthy tissues. For prostate cancer, this tumor …