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Sven Haller Haller, Nguyen, Rodriguez, Emch, Gold, Bartsch, Lovblad, Giannakopoulos
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Alzheimer Disease Coronal MRI scan shows absence (left) and presence (right) of atrophy of the medial temporal lobe in a healthy elderly subject and a patient with AD van der Flier W M and Scheltens P (2005) Use of laboratory and imaging investigations in dementia. J Neurol Neurosurg Psychiatry v45-52
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VBM in MCI VBM: 11 MCI versus 10 controls
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VBM: individual patient ?
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MCI: stable or progressive?
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a c b SVM: basics
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SVM: Classification of AD Kloppel S, Stonnington C M, Chu C et al (2008) Automatic classification of MR scans in Alzheimer's disease. Brain Pt 3:681- 689
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Methods 35 Controls 67 MCI Neuropsy follow-up after 1 year 40 stable MCI 27 progressive MCI MRI at baseline DTI SWI other (T2w….)
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Sven Haller
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TBSS
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Results: DTI Haller, S., Nguyen, D., Rodriguez, C., Emch, J., Gold, G., Bartsch, A. J. et al. (epub). Individual prediction of cognitive decline in mild cognitive impairment using support vector machine-based analysis of diffusion tensor imaging data. J Alzheimers Dis.
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Results: DTI Haller, S., Nguyen, D., Rodriguez, C., Emch, J., Gold, G., Bartsch, A. J. et al. (epub). Individual prediction of cognitive decline in mild cognitive impairment using support vector machine-based analysis of diffusion tensor imaging data. J Alzheimers Dis.
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Sven Haller
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Magnitude imagePhase mask image SWI image × = SWI: basics
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GRE T2* HEMO SWI
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Results: SWI Haller, S., Bartsch, A. J., Nguyen, D., Rodriguez, C., Emch, J., Gold, G. et al. (in press). Susceptibility weighted imaging (SWI) assessment of cerebral microbleeds and iron deposition in mild cognitive impairment. Radiology.
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Results: SWI Haller, S., Bartsch, A. J., Nguyen, D., Rodriguez, C., Emch, J., Gold, G. et al. (in press). Susceptibility weighted imaging (SWI) assessment of cerebral microbleeds and iron deposition in mild cognitive impairment. Radiology.
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Conclusions SVM classification sMCI versus pMCI at baseline MRI 98% based on DTI 84% based on SWI Higher number of microbleeds for MCI vs HC but no difference between sMCI and pMCI Iron accumulation MCI increased iron in the right pallidum and right substantia nigra, MCI decreased iron in the right red nucleus
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THANK YOU! The End
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