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 9 of 9 for “"Kilovoltage"”.
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Optimizing Kilovoltage Cone-Beam Computed Tomography for Image-Guided Radiation Therapy
Kilovoltage cone-beam computed tomography (kV CBCT) has important applications in image guided radiation therapy (IGRT). In its current state, CBCT is suboptimal for these applications due to its considerable radiation dose, poor soft-tissue contrast and inaccurate Hounsfield Units as a result of …
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Assessment of imaging dose from the kilovoltage cone beam computed tomography system on board the Varian Halcyon linear accelerator
… frequent nature of imaging sessions mostly using kilovoltage (kV) x-ray energies has raised concerns about the contribution of low-energy radiation dose to the overall integral dose and possible induction of secondary primary tumours. In this study, the dose to organs and tissues located in the …
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Optimization of Gold Nanoparticles for Radiotherapy
… radiosensitisation effect in combination with kilovoltage X-rays and a smaller effect with megavoltage X-rays. (2) Oligonucleotide-phosphine-coated AuNPs are shown to demonstrate a limited uptake in the cellular cytoplasm compared to the previous AuNPs but increase AuNPs uptake into the cell …
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Nuclear-Targeted Gold Nanoparticles Enhance The Effects of Radiation Therapy With and Without Liposomal Delivery
… require large quantities of gold, kilovoltage x-rays, immediate irradiation after intravenous administration, and repetitive administrations of AuNPs prior to each radiation dose during a course of fractionated radiotherapy. To overcome these challenges, the next generation of AuNPs …
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Radiation Dosimetry in the Presence of Gold Nanoparticles
… (GEART) to treat deep-seated tumours using kilovoltage photon beams. Applying the method established above, we quantified the quality of GEART treatments compared to conventional 6 MV treatments for a variety of tumour sizes and depths. We recommended those sites for which further …
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Dual energy image reconstruction and systems for application in proton therapy treatment planning
… scanning. The SECT scan results in a map of kilovoltage X-ray attenuation coefficients relative to the attenuation coefficient of water for the beam energy. This quantitative information is then converted to SPR via an empirically derived look-up table. If the patient tissues do not have a …
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Applications of cone beam computed tomography in radiotherapy treatment planning.
… has been the widespread implementation of kilovoltage imagers attached to the gantry of linear accelerators (LINACs); these units are capable of 2D planar imaging, fluoroscopy and 3D Cone Beam Computed Tomography (CBCT) imaging. With CBCT imaging, the treatment plan can be modified based on …
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An Exploration of the Feasibility of Combining Radiation Therapy with Psoralen Phototherapy
… is one such approach, where diagnostics-energy kilovoltage (kV) x-ray coupled with energy modulators (phosphors) converts kV photon to ultraviolet (UV) light, which in turn activates psoralen. Radiotherapy Enhanced with Cherenkov photo-Activation (RECA) is another approach, where therapeutic …