Essays about: "radiation scatter"
Showing result 1 - 5 of 18 essays containing the words radiation scatter.
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1. Evaluation of a Novel Reconstruction Framework for Gamma Knife Cone-Beam CT - The Impact of Scatter Correction and Noise Filtering on Image Quality and Co-registration Accuracy
University essay from KTH/FysikAbstract : The Gamma Knife is a non-invasive stereotactic radiosurgery system used for treatments of deep targets in the brain. Accurate patient positioning is needed for precise radiation delivery to the target. READ MORE
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2. Development and Evaluation of an Enzyme-Based Sunscreen
University essay from Lunds universitet/Bioteknik; Lunds universitet/Bioteknik (master)Abstract : Ultraviolet radiation (UVR), specifically of UVA and UVB, has been associated with the development of both photoaging and photo-carcinogenesis, potentially leading to cancer. The use of sun protection in the form of UV filters is known to minimize these damages. READ MORE
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3. Time-resolved x-ray diffraction study of longitudinal optical phonons in zincblende semiconductors
University essay from Lunds universitet/Atomfysik; Lunds universitet/Fysiska institutionenAbstract : Anharmonic decay of longitudinal optical (LO) phonons in zincblende semiconductors is not at present well characterized due to the polar and many-body nature of the problem. Femtosecond THz radiation offers a novel route to this study, as the interaction of this radiation is directly with the phonon lattice and these THz excited phonons do not have enough energy to excite electrons over the band gap. READ MORE
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4. Quantification of I-131 Activity from Gamma Camera Images of Thyroid Cancer Patients
University essay from Lunds universitet/SjukhusfysikerutbildningenAbstract : BACKGROUND: Radioiodine (131I) has been used in thyroid cancer treatments for many years, and has demonstrated good results with regards to disease management. Radioiodine therapy is however partially empirical, as not very much is known concerning radiation dosimetry. READ MORE
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5. Radiation exposure to personnel during fluoroscopic procedures : Strålningsmiljö för personal under genomlysningsarbete
University essay from Karlstads universitet/Institutionen för ingenjörsvetenskap och fysik (from 2013)Abstract : There are about 17 million X-ray procedures performed in Sweden every year. Various methods are used to determine the risk for the patient, and for the staff. READ MORE