Sökning: "Multivariate Image Analysis"

Visar resultat 1 - 5 av 112 avhandlingar innehållade orden Multivariate Image Analysis.

  1. 1. Decoding the complex brain : multivariate and multimodal analyses of neuroimaging data

    Författare :Alireza Salami; Lars Nyberg; Cheryl Grady; Umeå universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; multivariate analysis; univariate analysis; multimodal imaging; episodic memory; aging; functional magnetic resonance imaging; diffusion tensor imaging; biology; biologi; Psychology; psykologi; datoriserad bildanalys; Computerized Image Analysis;

    Sammanfattning : Functional brain images are extraordinarily rich data sets that reveal distributed brain networks engaged in a wide variety of cognitive operations. It is a substantial challenge both to create models of cognition that mimic behavior and underlying cognitive processes and to choose a suitable analytic method to identify underlying brain networks. LÄS MER

  2. 2. Multivariate Measurements and Chemical Imaging of Organic Compounds

    Författare :Johan Engelbrektsson; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Image analysis; Spectroscopy; Hyperspectral; Chemical Imaging; PCA; PLS; SERS; Wavelet Transform; Multivariate analysis;

    Sammanfattning : Chemical imaging is an emerging analytical technique, based on the interplay between, most often, spectroscopic measurements and advanced evaluation methodology. With this we can study the distribution of chemical compounds in different compartments, such as individual cells and pharmaceutical tablets. LÄS MER

  3. 3. Novel Approaches for Application of Principal Component Analysis on Dynamic PET Images for Improvement of Image Quality and Clinical Diagnosis

    Författare :Pasha Razifar; Ewert Bengtsson; Mats Bergström; Harald Schneider; Habib Zaidi; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Bildanalys; Dynamic PET; Noise Correlation; PCA; Image Quality; Slice-Wise; Pixel-Wise; Masked-Volume-Wise; Pre-normalization; Bildanalys; Image analysis; Bildanalys;

    Sammanfattning : Positron Emission Tomography, PET, can be used for dynamic studies in humans. In such studies a selected part of the body, often the whole brain, is imaged repeatedly after administration of a radiolabelled tracer. LÄS MER

  4. 4. Computational methods for analyzing dioxin-like compounds and identifying potential aryl hydrocarbon receptor ligands : multivariate studies based on human and rodent in vitro data

    Författare :Malin Larsson; Patrik Andersson; Anna Linusson; Mats Tysklind; Scott Boyer; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; dioxin-like compounds; multivariate analysis; toxic equivalency factor; quantitative structure-activity relationship; descriptors; virtual screening; in vitro; species variation; aryl hydrocarbon receptor;

    Sammanfattning : Polychlorinated dibenzo-p-dioxins/dibenzofurans (PCDD/Fs) and polychlorinated biphenyls (PCBs) are omnipresent and persistent environmental pollutants. In particular, 29 congeners are of special concern, and these are usually referred to as dioxin-like compounds (DLCs). LÄS MER

  5. 5. The rough journey to access health care : the case of leishmaniasis in the Bolivian rainforest

    Författare :Daniel V. Eid Rodríguez; Miguel San Sebastián; Isabel Goicolea; Anna-Karin Hurtig; John Porter; Umeå universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Cutaneous leishmaniasis; Health-care access; risk factors; population surveillance; capture-recapture; health care seeking behavior; intralesional pentavalent antimonials; economic analysis; cost analysis; budget impact analysis; Bolivia; rainforest; Public health; folkhälsa;

    Sammanfattning : Background: Leishmaniasis is a parasitic infectious disease transmitted by vectors that cause three main clinical syndromes: cutaneous (CL), mucosal (ML), and visceral (VL). Since VL is not relevant to this thesis, only CL and ML will be further discussed. LÄS MER