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 7 of 7 for “"PET scan"”.
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Penalized maximum likelihood method for reducing limited-angle artifacts in image reconstructions for a dual-panel high-spatial-resolution pet system
Whole-body positron emission tomography (PET) system has limited spatial resolution for imaging human head and neck cancer (HNC) due to the small size of lymph nodes. We are developing a dual-panel high-spatial-resolution PET system for better imaging HNC. The PET system is designed as a dual-panel …
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Usefulness of [18F]-Deoxyglucose Positron Emission Tomography in Diagnosing the Patients with Corticobasal Degeneration
… positron emission tomography (FDG PET) scan studies. We investigated the hypometabolic pattern of Korean CBD patients using quantitative FDG PET and voxel based comparison method. METHODS: Twelve patients with CBD and 16 age-matched controls were included in this study. Quantitative …
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PET in the evaluation of head and neck cancer treatment - management of the neck
… was to explore if positron emission tomography (PET) could be used for radiotherapy response evaluation and adequately determine the need for further therapeutic interventions in patients with HNSCC treated with curative intent. The overall clinical goal with the thesis was to reduce the …
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Changes in cerebral glucose metabolism in patients with Parkinson’s disease with dementia after cholinesterase inhibitor therapy
… on brain images. We performed serial 18FFDG PET studies in patients with PDD before and after ChEI therapy. METHOD: We investigated 11 patients with clinical diagnosis of PDD. Patients were treated with either donepezil or galantamine. End point was when patients were treated for at least 3 …
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Improved quantification in small animal PET/MR
… imaging (MRI) and positron emission tomography (PET) provides excellent soft tissue contrast from MRI with exceptional sensitivity and specificity from PET. This thesis explores the use of sequentially acquired PET and MR images to improve the quantification of small animal PET data. The primary …
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First-order gradient regularisation methods for image restoration: reconstruction of tomographic images with thin structures and denoising piecewise affine images
… space for reconstruction of thin structures from PET data and regularisers given by an infimal-convolution of TV and $L^p$ seminorms for denoising images with piecewise affine structures. In the first part of this thesis, we present a novel variational model for PET reconstruction. During a PET …
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Imaging of abdominal aortic aneurysm disease activity and implications for endovascular aneurysm repair
BACKGROUND: Abdominal aortic aneurysm treatment pathways are initiated when an aortic size threshold of 55 mm is reached as this signifies a high annual risk of rupture due to presumed active aneurysm disease. Endovascular aneurysm repair (EVAR) is one treatment modality which reduces the …