Sökning: "mri contrast"

Visar resultat 1 - 5 av 80 uppsatser innehållade orden mri contrast.

  1. 1. Gadoliniumretention, dess inverkan på människokroppen samt vilka förebyggande åtgärder röntgensjuksköterskan kan behöva implementera : En litteraturstudie

    Kandidat-uppsats, Uppsala universitet/Radiologi

    Författare :Malin Ahlkvist; Tilda Lidell; [2024]
    Nyckelord :Gadoliniumretention; Contrast Media; MRI; Radiographers; Gadoliniumretention; Kontrastmedel; MR; Röntgensjuksköterska;

    Sammanfattning : Bakgrund Magnetresonanstomografi undersökningar blir mer frekventa och därmed ökar användningen av gadoliniumbaserade kontrastmedel. Dock är gadoliniumretention ett relativt nyupptäckt fenomen och dess påverkan är fortfarande relativt okänt. LÄS MER

  3. 2. Anatomical segmentation of the human brain: comparative assessment of two automatic methods

    Master-uppsats,

    Författare :Carl von Dorrien; [2023-08-22]
    Nyckelord :Medical physics; MAPER; FreeSurfer; FastSurfer; Automatic brain segmentation; MRI; Deep Neural Network; Brain;

    Sammanfattning : Magnetic Resonance Imaging (MRI) is a robust and versatile imaging modality and an integral component of a lot of studies, especially when performing quantitative analysis. MRI is the preferred method of imaging the brain because of its excellent soft tissue contrast. LÄS MER

  4. 3. Enabling Hybrid Real Time and Retrospectively Gated Imaging in a Numerical Phantom

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

    Författare :Sara Mineur; [2023]
    Nyckelord :Cardiovascular Magnetic resonance Imaging CMR ; Sector Wise Golden-Angle SWIG ;

    Sammanfattning : Sector-Wise Golden Angle (SWIG) is a novel approach that was developed to address the limitations associated with Golden Angle radial imaging, commonly used for high temporal resolution flow measurements. Golden angle radial imaging is a time-efficient method that effectively reduces motion sensitivity. LÄS MER

  5. 4. 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

  7. 5. Development of a tool for analysis and visualization of longitudinal magnetic resonance flowmeasurements : of subarachnoid hemorrhage patients in the neurointensivecare unit

    Master-uppsats, Linköpings universitet/Institutionen för medicinsk teknik

    Författare :ILDI ADOK; [2023]
    Nyckelord :2D phase contrast MRI; subarachnoid hemorrhage; cerebral blood flow; visualization; neurointensive care;

    Sammanfattning : Patients who are treated in an intensive care unit need continuous monitoring in orderfor clinicians to be prepared to intervene should a secondary event occur. For patientstreated at the neurointensive care unit (NICU) who have suffered a subarachnoid hemorrhage (SAH) this secondary event could be ischemia, resulting in a lack of blood flow. LÄS MER