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- W87451772 abstract "This thesis deals with the analysis of brain function in Magnetic Resonance Imaging (MRI) using two sequences: BOLD functional MRI (fMRI) and Arterial Spin Labelling (ASL). In this context, group statistical analyses are of great importance in order to understand the general mechanisms underlying a pathology, but there is also an increasing interest towards patient-specific analyses that draw conclusions at the patient level. Both group and patient-specific analyses are studied in this thesis. We first introduce a group analysis in BOLD fMRI for the study of specific language impairment, a pathology that was very little investigated in neuroimaging. We outline atypical patterns of functional activity and lateralisation in language regions. Then, we move forward to patient-specific analysis. We propose the use of robust estimators to compute cerebral blood flow maps in ASL. Then, we analyse the validity of the assumptions underlying standard statistical analyses in the context of ASL. Finally, we propose a new locally multivariate statistical method based on an a contrario approach and apply it to the detection of atypical patterns of perfusion in ASL and to activation detection in BOLD functional MRI." @default.
- W87451772 created "2016-06-24" @default.
- W87451772 creator A5028412465 @default.
- W87451772 date "2013-05-29" @default.
- W87451772 modified "2023-09-23" @default.
- W87451772 title "From Group to Patient-Specific Analysis of Brain Function in Arterial Spin Labelling and BOLD Functional MRI" @default.
- W87451772 hasPublicationYear "2013" @default.
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