Sökning: "MRI stroke"

Visar resultat 1 - 5 av 13 uppsatser innehållade orden MRI stroke.

  1. 1. Phase Unwrapping MRI Flow Measurements

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Avdelningen Vi3

    Författare :Mio Liljeblad; [2023]
    Nyckelord :phase unwrapping; computer vision; cine MRI; NMR; flow measurements; velocity encoding; venc; energy minimization; magnetic resonance; cardiac MRI; sinotubuar junction; pulmonary artery; ascending descending aorta; laplacian algorithm; iterative graph cuts; IGC; sequential tree-reweighted message passing; TRW-S; velocity to noise ratio; VNR; retrospective wrapping; energy formulation;

    Sammanfattning : Magnetic resonance images (MRI) are acquired by sampling the current of induced electromotiveforce (EMF). EMF is induced due to flux of the net magnetic field from coherent nuclear spins with intrinsic magnetic dipole moments. LÄS MER

  3. 2. Deep Learning Based Detection, Quantification, and Subdivision of White Matter Hyperintensities in Brain MRI

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Avdelningen Vi3

    Författare :Inna Fryckstedt; [2023]
    Nyckelord :white matter hyperintensities; white matter lesions; deep learning; machine learning; DL; ML; MRI; iNPH;

    Sammanfattning : White matter hyperintensities (WMH) are commonly found as bright regions in brain MRI images in older individuals. They are associated with various neurological and vascular diseases, such as stroke, dementia, and cardiovascular disorders. LÄS MER

  4. 3. Unified theory and experimental approach for measuring restricted diffusion and water exchange

    Master-uppsats, Lunds universitet/Sjukhusfysikerutbildningen

    Författare :Arthur Chakwizira; [2020]
    Nyckelord :Medicine and Health Sciences;

    Sammanfattning : Fifteen million people lose their lives to stroke and cancer every year. This amounts to one in every four deaths worldwide, making these among the deadliest diseases affecting humankind. Fruitful attempts at containing stroke- and cancer-related mortality hinge on early detection. LÄS MER

  5. 4. Determination of In-vivo Muscle Architecture : Comparison of Ultrasound and Diffusion Tensor Imaging and Analysis of Muscle Morphology in Post-stroke Patients

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

    Författare :Clara Körting; [2018]
    Nyckelord :Ultrasound; MRI; Diffusion tensor imaging; Muscle architecture; Stroke;

    Sammanfattning : This study investigates the in-vivo architecture of muscles in the lower leg using 2D ultrasound (US) and 3D diffusion tensor imaging (DTI) techniques. The muscle architecture of the gastrocnemius, posterior soleus and tibialis anterior were compared using US and DTI imaging. LÄS MER

  7. 5. Interactive Analytics and Visualization for Data Driven Calculation of Individualized COPD Risk

    Master-uppsats, Linköpings universitet/Interaktiva och kognitiva system

    Författare :Emil Arkstål; [2018]
    Nyckelord :COPD; Visualization; Big Data; Virtual Control Group;

    Sammanfattning : Chronic obstructive pulmonary disease (COPD) is a high mortality disease, second to stroke and ischemic heart disease. This non-curable disease progressively exacerbates, leading to high personal and societal economic impact, reduced quality of life and often death. General treatment plans for COPD risk mistreating the individuals’ condition. LÄS MER