Sökning: "T1-mapping"

Hittade 4 uppsatser innehållade ordet T1-mapping.

  1. 1. Optimization of MP2RAGE sequence parameters for head and neck T1-mapping and OE-MRI

    Master-uppsats,

    Författare :Ellen Börjesson; [2022-05-04]
    Nyckelord :Medical physics; MRI; OE-MRI; MP2RAGE; T1-mapping;

    Sammanfattning : Cancer is the collective name for more than 200 types of diseases that annually causes the death of 8.8 million people, cancer in the head and neck (H&N) accounts for 330.000 of these. It has been shown that hypoxic tumors are more resistant to treatment than well oxygenated tumors. LÄS MER

  3. 2. Measuring T1 using MP2RAGE in Human Brain at 7T – Effect of B1+ and Inversion Pulse Efficiency

    Master-uppsats, Lunds universitet/Sjukhusfysikerutbildningen

    Författare :Mustafa Kadhim; [2021]
    Nyckelord :Medicine and Health Sciences;

    Sammanfattning : Introduction: The MP2RAGE technique has become popular for structural MRI at ultra-high fields. The core idea behind MP2RAGE is to reduce the influence of flip angle inhomogeneity (B +), proton density and T2* by calculating the regularized signed ratio of two complex MP-RAGE images acquired at different inversion times (TI) within the cycle. LÄS MER

  4. 3. Regional MRI T1 mapping analysis of tobacco smoke exposed mouse lungs

    Master-uppsats, KTH/Fysik

    Författare :Gustav Söderström; [2019]
    Nyckelord :MRI; Magnetic Resonance Imaging; Lungs; COPD; Chronic Obstructive Pulmonary Disease; T1 mapping; Tobacco smoke; Emphysema; Chronic Bronchitis;

    Sammanfattning : Chronic obstructive pulmonary disease is the fourth largest cause of death worldwide and the prevalence is predicted to increase even further to make it the third largest cause of death by 2020. The main cause of the disease is exposure to tobacco smoke. LÄS MER

  5. 4. Validation and Robustness Analysis of Dynamic Contrast Enhanced MRI

    Master-uppsats, Umeå universitet/Institutionen för fysik

    Författare :Samuel Fransson; [2015]
    Nyckelord :MRI; DCE-MRI; Dynamic Contrast Enhanced MRI; Validation; Simulation;

    Sammanfattning : In Dynamic Contrast Enhanced MRI there are several steps from the initial signal to obtaining the pharmacokinetic parameters for tumor characterization. The aim of this work was to validate the steps in the flow of data focusing on T1-mapping, Contrast Agent (CA)-quantification and the pharmacokinetical (PK) model, using a digital phantom of a head. LÄS MER