Robust estimation of sulcal morphology
نویسندگان
چکیده
منابع مشابه
Sexual dimorphism of sulcal morphology of the ferret cerebrum revealed by MRI-based sulcal surface morphometry
The present study quantitatively assessed sexual dimorphism of cortical convolution and sulcal morphology in young adult ferrets by MRI-based sulcal surface morphometry. Ex vivo T1-weighted (short TR/TE) MRI of the ferret cerebrum was acquired with high spatial resolution at 7-tesla. The degree of cortical convolution, evaluated quantitatively based on 3D MRI data by sulcation index (SI), was s...
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The superior temporal sulcus (STs) is the main sulcal landmark of the external temporal cortex and is very important for functional (posterior language areas on the left) mapping and surgery. The methodology we use is based on the extraction of the 3D shape of sulci and their separation into subunits called sulcal roots. Seventeen normal brains (male: 11, female: 6, age: 22-60) were systematica...
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We provide a new computationally-efficient class of estimators for risk minimization. We show that these estimators are robust for general statistical models: in the classical Huber ǫ-contamination model and in heavy-tailed settings. Our workhorse is a novel robust variant of gradient descent, and we provide conditions under which our gradient descent variant provides accurate estimators in a g...
متن کاملIdentification of Early-Stage Alzheimer's Disease Using Sulcal Morphology and Other Common Neuroimaging Indices
Identifying Alzheimer's disease (AD) at its early stage is of major interest in AD research. Previous studies have suggested that abnormalities in regional sulcal width and global sulcal index (g-SI) are characteristics of patients with early-stage AD. In this study, we investigated sulcal width and three other common neuroimaging morphological measures (cortical thickness, cortical volume, and...
متن کاملBasal temporal sulcal morphology in healthy controls and patients with temporal lobe epilepsy.
BACKGROUND We previously demonstrated that shape variants of the hippocampal formation are more prevalent in patients with temporal lobe epilepsy (TLE) than in healthy individuals. OBJECTIVE To categorize sulcal patterns of the basal temporal lobe in TLE compared to healthy controls. METHODS We studied 51 healthy controls and 69 patients with TLE (37 left, 32 right TLE). Brain sulci were id...
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ژورنال
عنوان ژورنال: Brain Informatics
سال: 2019
ISSN: 2198-4018,2198-4026
DOI: 10.1186/s40708-019-0098-1