Sökning: "Anatomical brain atlas"

Hittade 4 uppsatser innehållade orden Anatomical brain atlas.

  1. 1. Characterization of discrepancies between manual and automatic segmentation to improve anatomical brain atlases

    Master-uppsats,

    Författare :Anna Sörensson; [2021-05-10]
    Nyckelord :Medical physics; Anatomical brain atlas; Image segmentation; Image registration;

    Sammanfattning : Purpose: To characterize discrepancies between expert manually segmented brain images fromHammers Atlas Database and automatically generated segmentations of the same images; to decide whether they can be attributed to flaws in the automatic segmentation or in the manual segmentation; and to determine general rules that enable these decisions.Theory: Image segmentation plays an important role in clinical neuroscience and experimental medicine for extraction of information from medical images, and it is a fundamental image processing step in medical image analysis. LÄS MER

  2. 2. ATLAS DATABASES OF HUMAN BRAIN ANATOMY: QUALITATIVE AND QUANTITATIVE COMPARISON

    Master-uppsats,

    Författare :Amanda Philipsson Franzén; [2021-01-11]
    Nyckelord :Medical physics; Brain atlas concordance problem; Quantitative comparison; Qualitative comparison; Hammersmith; 2012 MICCAI Multi-Atlas Labelling Challenge Data;

    Sammanfattning : The purpose of this study was to quantitatively and qualitatively compare the two brain atlases databases, Hammersmith and 2012 MICCAI Multi-Atlas Labelling Challenge data, by developing a quantitative method.TheoryAnatomical atlases of the human brain provide reference information about its structure. LÄS MER

  3. 3. Überatlas: Robust speed-up of feature-based registration and multi-atlas based segmentation

    Master-uppsats, Lunds universitet/Matematik LTH

    Författare :Jennifer Alvén; [2015]
    Nyckelord :computer vision; medical image analysis; feature-based registration; segmentation of pericardium; segmentation of brain; multi-atlas based segmentation; Mathematics and Statistics;

    Sammanfattning : Registration is a key component in multi-atlas approaches to medical image segmentation. Current state-of-the-art uses intensity-based registration methods, but such methods tend to be slow and sensitive to large amount of noise and anatomical abnormalities present in medical images. LÄS MER

  4. 4. Brain MRI segmentation for the longitudinal follow-up of regional atrophy in Alzheimer’s Disease

    Master-uppsats, KTH/Skolan för teknik och hälsa (STH)

    Författare :Clemence Petit; [2014]
    Nyckelord :Segmentation; MRI; Brain; Alzheimer s Disease; Tissue classification; Graph-cuts optimization;

    Sammanfattning : Brain atrophy measurement is increasingly important in studies of neurodegenerative diseases such as Alzheimer’s disease. From this perspective, a regional segmentation framework for magnetic resonance images has recently been developed by the team that I joined for my master thesis. It combines an atlas fusion and a tissue classification. LÄS MER