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 5 of 5 for “"Ventilation Imaging"”.
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Evaluation of Deformable Image Registration For Improved 4D Ct-Derived Ventilation For Image Guided Radiotherapy
… treatment planning, is a relatively new imaging technique that allows the acquisition of a time-varying sequence of 3D CT images of the patient's lungs through the respiratory cycle. Guerrero et al. developed a method to calculate ventilation imaging from 4D CT, which is potentially …
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Computational models for respiratory gas exchange and their applications
… relating to physiology, experimentation/imaging, and gas exchange during clinical therapy. First, the simplest steady state model is used to study structure-function relationships in the normal lung and reconcile differing experimental observations on the relative importance of passive …
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Improving The Accuracy of Radiation Pneumonitis Dose Response Models
… model. In Specific Aim 2 we incorporated ventilation-based functional information into a predictive pneumonitis model. In the third specific aim a proof of principle virtual simulation was performed where a model-determined limit was used to scale the prescription dose.</p> <p>The data …
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Improved Visualization and Quantification for Hyperpolarized 129Xe MRI
… of the lung. Nuclear medicine, employing 133Xe ventilation and 99Tcm-macroaggregated albumin perfusion scan (ventilation/perfusion V/Q scan) can assess the inequality of airflow and blood flow in the lung. However, this V/Q scan evolves the usage of radioactive tracers and is limited by both …
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Investigation of Deformable Image Registration Based Lung Ventilation Mapping for Radiation Therapy Using a Hybrid Hyperpolarized Gas MRI Technique
… avoidance radiation therapy (RT) using lung ventilation mapping techniques would allow for preferential avoidance of functional lung tissue during radiotherapy and potentially reduce RT-induced lung injuries. Additionally, lung ventilation is also a key metric to assess lung function in …