Search for dissertations about: "CT scanning"
Showing result 1 - 5 of 59 swedish dissertations containing the words CT scanning.
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1. Image Quality Optimisation and Dose Management in CT, SPECT/CT, and PET/CT
Abstract : The significant increase in the use of CT, alone or combined with SPECT or PET, has raised concerns about patient radiation exposure and the consequent increased risk of malignancy later in life. The overall objective of this work was to evaluate and optimise different approaches for minimising patient radiation absorbed dose and maintaining or improving image quality in CT, SPECT/CT, and PET/CT. READ MORE
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2. Wood shrinkage in CT-scanning analysis
Abstract : Computed tomography (CT) can be used to study wood-water interactions in differentways, such as by determining wood moisture content (MC). The determination of MCrequires two CT images: one at the unknown moisture distribution and a second one ata known reference MC level, usually oven-dry MC. The two scans are then compared. READ MORE
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3. CT with 3D-Image Reconstructions in Preoperative Planning
Abstract : Computed tomography is one of the most evolving fields of modern radiology. The current CT applications permit among other things angiography, 3D image reconstructions, material decomposition and tissue characterization. CT is an important tool in the assessment of specific patient populations prior to an invasive or surgical procedure. READ MORE
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4. X-ray CT-scanning of wood during drying
Abstract : Moisture flux in wood during drying was studied using a medical CT scanner. A special device was built that enables performance of nondestructive measurements without removing the test piece during the whole drying process. READ MORE
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5. Patient Positioning in Radiotherapy Using Body Surface Scanning
Abstract : External radiotherapy uses ionising radiation to damage the DNA of the tumour cells and thereby inhibit their uncontrolled proliferation. The technical development regarding imaging and visualisation for radiotherapy has increased considerably during the last decades. READ MORE