Sökning: "brain mri"

Visar resultat 1 - 5 av 116 uppsatser innehållade orden brain mri.

  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. Sex Differences in Dopamine D1-type Receptors and Episodic Memory : an Imaging Study Across the Adult Lifespan

    Master-uppsats, Umeå universitet/Umeå centrum för funktionell hjärnavbildning (UFBI); Umeå universitet/Institutionen för psykologi

    Författare :Anton Degerfält; [2023]
    Nyckelord :dopamine; D1DR; sex; episodic memory; ageing; PET; MRI;

    Sammanfattning : Identification of the pathways that could be targeted to alleviate ageing-related cognitive decline is of prime importance. One of the most promising target mechanisms is connected to healthy dopaminergic ageing. LÄS MER

  5. 4. Polymer gel dosimetry with MRI-readout for 3D dose verification - detector characteristics and clinical applications

    Master-uppsats, Lunds universitet/Sjukhusfysikerutbildningen

    Författare :Thi Guldhill; [2023]
    Nyckelord :Medicine and Health Sciences;

    Sammanfattning : Background & Purpose: Radiation therapy is an essential treatment for cancer patients with the ultimate goal to deliver radiation doses to the tumour with precision while minimizing exposure to surrounding healthy tissues. Treatment verification is crucial to ensure the accuracy of radiation delivery, for instance by measuring the radiation dose distribution. LÄS MER

  7. 5. Comparative Analysis of Transformer and CNN Based Models for 2D Brain Tumor Segmentation

    Master-uppsats, Linköpings universitet/Institutionen för medicinsk teknik

    Författare :Henrik Träff; [2023]
    Nyckelord :Machine Learning; ML; AI; Computer vision; Vision Transformer; Swin Transformer; U-Net; nnU-Net; Brain Tumor Segmentation; Deep Learning;

    Sammanfattning : A brain tumor is an abnormal growth of cells within the brain, which can be categorized into primary and secondary tumor types. The most common type of primary tumors in adults are gliomas, which can be further classified into high-grade gliomas (HGGs) and low-grade gliomas (LGGs). LÄS MER