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 8 of 8 for “"motion management"”.
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Investigation of Respiratory Motion Management Techniques For Proton and Photon Radiotherapy of Lung Cancer
… as high-energy photons. However, respiratory motion can significantly impact the delivered proton and photon dose distributions during lung cancer radiotherapy. The goals of this dissertation research were to evaluate the impact of respiratory motion and to estimate the benefit of respiratory …
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Analysis of 3D and 4D proton treatment planning for hepatic tumors
… explicitly takes into account respiratory motion of abdominal organs. A 4DCT scan consists of 10 3D anatomical states, each at an instant of time in the respiratory cycle. 4D treatment planning includes 1) propagating the target contours, drawn by a physician on one phase, to all breathing …
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Exploring the Role of GD-EOB-DTPA (Primovist®) MRI in Liver Stereotactic Body Radiation Therapy Accuracy
… Specifically, the number of treatments, motion management, and image guidance can vary across cancer centers. Due to this, the delivery accuracy can also vary across different practices of liver SBRT implementation. The Primovist®-enhanced MRI allows for the direct visualization of the …
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Quantifying The Magnitude of to tal Dose Deviation Caused By Various Sources of Error Among Iroc Phantom Irradiation Results
… (H&N) phantom failures, which are static (no motion) and generally have more highly modulated plans, were caused by systematic dose errors. This was when the dose in the entire plan was either too high or too low throughout the entire plan, indicating errors in the institution’s TPS dose …
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Advances in real-time thoracic guidance systems
Substantial tissue motion: >1cm) arises in the thoracic/abdominal cavity due to respiration. There are many clinical applications in which localizing tissue with high accuracy: <1mm) is important. Potential applications include radiation therapy, radio frequency ablation, lung/liver biopsies, and …
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Improvements In Robustness and Optimality of Intensity-Modulated Proton Therapy Plans For Lung Cancer Patients With 4-Dimensional Robust Optimization
… of uncertainties associated with breathing motion in treatment planning. The primary objective of this research was to develop a novel four-dimensional robust optimization (4DRO) method and find an appropriate optimization strategy to make IMPT dose distributions less sensitive to both …
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Improvements In Four-Dimensional and Dual Energy Computed to mography
… the visualization and quantification of object motion. While much research has been done with these technologies, areas remain for potential improvement, both in preclinical and clinical settings, which will be explored in this dissertation. Preclinical dual energy cone-beam CT (CBCT) can …