Sökning: "Tractography"

Visar resultat 1 - 5 av 10 uppsatser innehållade ordet Tractography.

  1. 1. Assessing the Streamline Plausibility Through Convex Optimization for Microstructure Informed Tractography(COMMIT) with Deep Learning

    Master-uppsats, KTH/Skolan för kemi, bioteknologi och hälsa (CBH)

    Författare :Xinyi Wan; [2023]
    Nyckelord :Tractography; dMRI; Filtering Methods; Deep Learning; Classification;

    Sammanfattning : Tractography is widely used in the brain connectivity study from diffusion magnetic resonance imaging data. However, lack of ground truth and plenty of anatomically implausible streamlines in the tractograms have caused challenges and concerns in the use of tractograms such as brain connectivity study. LÄS MER

  3. 2. Impact of the autoencoder-based FINTA tractogram filtering method on brain networks in subjects with Mild Cognitive Impairment

    Master-uppsats, KTH/Skolan för kemi, bioteknologi och hälsa (CBH)

    Författare :Teodor Pstrusiński; [2023]
    Nyckelord :Tractography; Autoencoder; diffusion MRI; Filtering; Graph; Connectome; Traktografi; Autoencoder; diffusions MRT; Filtrering; Graf; Konnektom;

    Sammanfattning : Diffusion Magnetic Resonance Imaging (dMRI) is a method for measuring molecular diffusion in biological tissue microstructure. This information can be used to predict the location and orientation of white matter fibers in the brain, a process known as tractography. LÄS MER

  4. 3. Towards Anatomically Plausible Streamline Tractography with Deep Reinforcement Learning

    Master-uppsats, KTH/Skolan för kemi, bioteknologi och hälsa (CBH)

    Författare :Erika Bengtsdotter; [2022]
    Nyckelord :Deep Reinforcement Learning; Plausible; Track-To-Learn; Tractography;

    Sammanfattning : Tractography is a tool that is often used to study structural brain connectivity from diffusion magnetic resonance imaging data. Despite its ability to visualize fibers in the white brain matter, it results in a high number of invalid streamlines. LÄS MER

  5. 4. Impact of tractogram filtering and graph creation for structural connectomics in subjects with mild cognitive impairment

    Master-uppsats, KTH/Skolan för kemi, bioteknologi och hälsa (CBH)

    Författare :Marvin Köpff; [2020]
    Nyckelord :Mild cognitive impairment; MCI; MRI; Tractography; Tractogram Filtering; SIFT; Graph Creation; Machine Learning; Classification;

    Sammanfattning : One particular challenge of brain connectomics deals with inferring differences in the brain due to diseases such as Alzheimer's. More specifically, structural connectomics aims at investigating the connectivity between regions in the brain based on the distribution of neuronal fibers. LÄS MER

  7. 5. A reliable method of tractography analysis : of DTI-data from anatomically and clinically difficult groups

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Radiologi

    Författare :Johanna Blomstedt; [2019]
    Nyckelord :MRI; DTI; diffusion; trigeminal nerve; radiology;

    Sammanfattning : MRI is used to produce images of tissue in the body. DTI, specifically, makes it possible to track the effects of nerves where they are in the brain. This project includes a shell script and a guide for using the FMRIB Software Library, followed by StarTrack and then Trackvis in order to track difficult areas in the brain. LÄS MER