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- W2109603616 abstract "Progressive cerebral atrophy is a physical component of the most common forms of dementia - Alzheimer's disease, vascular dementia, Lewy-Body disease and fronto-temporal dementia. We propose a phenomenological simulation of atrophy in MR images that provides gold-standard data; the origin and rate of progression of atrophy can be controlled and the resultant remodelling of brain structures is known. We simulate diffuse global atrophic change by generating global volumetric change in a physically realistic biomechanical model of the human brain. Thermal loads are applied to either single, or multiple, tissue types within the brain to drive tissue expansion or contraction. Mechanical readjustment is modelled using finite element methods (FEM). In this preliminary work we apply these techniques to the MNI brainweb phantom to produce new images exhibiting global diffuse atrophy. We compare the applied atrophy with that measured from the images using an established quantitative technique. Early results are encouraging and suggest that the model can be extended and used for validation of atrophy measurement techniques and non-rigid image registration, and for understanding the effect of atrophy on brain shape." @default.
- W2109603616 created "2016-06-24" @default.
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- W2109603616 date "2003-05-16" @default.
- W2109603616 modified "2023-10-04" @default.
- W2109603616 title "Biomechanical simulation of atrophy in MR images" @default.
- W2109603616 doi "https://doi.org/10.1117/12.480412" @default.
- W2109603616 hasPublicationYear "2003" @default.
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