Blar i NTNU Open på forfatter "Goa, Pål Erik"
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Electrical Bioimpedance Based Heart Monitoring System
Gåsland, Bergljot Matre (Master thesis, 2016)There is a great need for monitoring devices in the intensive care unit during, and after, cardiac surgery to be able to detect anomalies at an early stage. The techniques used today are good, but limited in di erent ways. ... -
The Establishment of an Intravoxel Incoherent Motion Based MRI-Protocol for Differentiation of Focal Lesions in the Pancreas
Hillestad, Tiril (Master thesis, 2015)The mortality related to pancreatic cancer is high. It spreads rapidly and as the situation is today it is often not diagnosed until a quite late stage. However, recent studies have shown that the intravoxel incoherent ... -
Exploring the diagnostic potential of adding T2 dependence in diffusion-weighted MR imaging of the prostate
Syversen, Ingrid Framås; Elschot, Mattijs; Sandsmark, Elise; Bertilsson, Helena; Bathen, Tone Frost; Goa, Pål Erik (Peer reviewed; Journal article, 2021)Background: Magnetic resonance imaging (MRI) is essential in the detection and staging of prostate cancer. However, improved tools to distinguish between low-risk and high-risk cancer are needed in order to select the ... -
Favorable effects on arterial stiffness after renal sympathetic denervation for the treatment of resistant hypertension: a cardiovascular magnetic resonance study
Hammer, Tommy Arild; Langlo, Knut Asbjørn Rise; Goa, Pål Erik; Fadl Elmula, Fadl Elmula M.; HOFFMANN, PAVEL; STENSÆTH, KNUT-HAAKON (Peer reviewed; Journal article, 2016)Aims: Renal sympathetic denervation (RDN) has recently been suggested to be a novel treatment strategy for patients with treatment-resistant hypertension. However, the latest randomized studies have provided conflicting ... -
Feasibility of contrast-enhanced MRI derived textural features to predict overall survival in locally advanced breast cancer.
Chronaiou, Ioanna; Giskeødegård, Guro F.; Goa, Pål Erik; Teruel, Jose; Hedayati, Roja; Lundgren, Steinar; Huuse, Else Marie; Pickles, Martin D.; Gibbs, Peter; Sitter, Beathe; Bathen, Tone Frost (Journal article; Peer reviewed, 2019)Background The prognosis for women with locally advanced breast cancer (LABC) is poor and there is a need for better treatment stratification. Gray-level co-occurrence matrix (GLCM) texture analysis of magnetic resonance ... -
Feasibility of Using Phototherapy with Sunlight for Treatment of Neonatal Jaundice in Low-Income Countries
Rønneberg, Sigrid (Master thesis, 2016)This thesis aimed to investigate the feasibility of using sunlight exposure as treatment for neonatal jaundice in low-income countries. The investigation answered four questions: 1. Is it feasible to treat infants with ... -
Implementation of geometric distortion correction of EPI images in clinical workflow
Syversen, Ingrid Framås (Master thesis, 2018)Background: Geometric distortion in echo-planar (EPI) magnetic resonance (MR) images, caused by low bandwidth combined with variations in magnetic susceptibility, is a problem that can make it challenging to connect ... -
Investigation of Neural Network Auto Encoders as Means of Initialisation
Tveitstøl, Thomas (Master thesis, 2021)Initialisering av vekter i kunstige nevrale nettverk har fått mye oppmerksomhet i litteratur. Det kan ha en signifikant effekt på konvergensrate, varians, generalisering og ytelse. Til tross for dets viktighet, er ... -
Iron oxide nanocrystals clustered in oil-in-water nanoemulsions: Preparation, characterization, and transverse relaxivities
Hadera, Hailay Teklegiorgis (Master thesis, 2015)Iron oxide nanocrystals (IONCs) have attracted extensive interest due to their high magnetization that efficiently decreases the transverse relaxation times of water protons. The increase in their transverse relaxivities ... -
Magnetic Resonance Imaging: Multidimensional non-Gaussian Diffusion-weighted MRI - Image quality analysis
Meisingset, Jens Wergeland (Master thesis, 2015)To investigate the viability of two different nuclear magnetic resonance imaging systems for acquisition of highly diffusion weighted, multidimensional human brain data, images were acquired on both, using two different ... -
Measuring RF-Induced Heating of a Phantom with PRF Shift Thermometry
Haakonsen, Carl Fredrik (Master thesis, 2022)Under MR-avbildning simuleres den spesifikke absorpsjonsraten (SAR) for å sikre at oppvarmingen som følge av bildesekvensens radiofrekvenspulser (RF) ikke overskrider de regulatoriske grensene. Å verifisere simuleringene ... -
Metabolic Profiling of Prostate Cancer Tissue Using Magnetic Resonance Spectroscopy - An investigation into prostate heterogeneity and cancer characteristics in a transgenic mouse model, with a comparison to human disease
Løveng, Silje (Master thesis, 2017)Using 1H High-Resolution Magic Angle Spinning Magnetic Resonance Spectroscopy, tissue samples of both healthy mouse prostate and different grades of mouse prostate cancer in a transgenic mouse model were analysed to ... -
Modeling the diffusion-weighted imaging signal for breast lesions in the b = 200 to 3000 s/mm 2 range: quality of fit and classification accuracy for different representations
Vidic, Igor; Egnell, Liv Elisabet; Jerome, Neil Peter; White, Nathan; Karunamuni, Roshan; Rakow-Penner, Rebecca; Dale, Anders M.; Bathen, Tone Frost; Goa, Pål Erik (Peer reviewed; Journal article, 2020)Purpose To evaluate different non‐Gaussian representations for the diffusion‐weighted imaging (DWI) signal in the b‐value range 200 to 3000 s/mm2 in benign and malignant breast lesions. Methods Forty‐three patients ... -
Monte Carlo Simulations of Diffusion MRI in Restricted Geometries
Johansen, Ane Nordlie (Master thesis, 2017)The main part of the thesis has been to implement an environment in Matlab, suitable for simulating diffusion MRI. The implementation consists of a simulation of self-diffusion, wall detection and interaction for the ... -
Multi-parametric Diffusion Weighted Magnetic Resonance Imaging and Analysis in Breast Cancer
Vidić, Igor (Doctoral theses at NTNU;2019:203, Doctoral thesis, 2019)Accurate noninvasive diagnostic and subtyping procedures for cancer are very important. Diffusion-weighted imaging (DWI) reflects the microscopic cellular environment and is sensitive to tumor characteristics such as cell ... -
Multi-parametric diffusion-weighted magnetic resonance imaging and microstructural tissue properties in breast cancer
Egnell, Liv Elisabet (Doctoral theses at NTNU;2021:208, Doctoral thesis, 2021)Breast cancer is the most common cancer in women worldwide. Although breast cancer survival has improved in recent years, it remains a leading cause of cancer death in the female population worldwide. Breast cancer prognosis ... -
MYOCARDIAL STRAIN MEASUREMENTS WITH MRI USING FEATURE TRACKING
Kataike Victoria, Mercy (Master thesis, 2016)Myocardial strain is increasingly used in determination of myocardial function in the medical field due to its ability to detect cardiac diseases in the early stages, its ability to quantify regional myocardial function ... -
Non-Cartesian k-space Sampling and Reconstruction in MRI Using Pulseq
Ryttervold, Mari Engebretsen (Master thesis, 2020)Utvikling og implementering av nye MR-sekvenser krever ofte innsikt i omfattende, lavnivå og leverandørspesifikke programmeringsmiljøer. Pulseq er et plattformuavhengig verktøy for design av MR-sekvenser som tillater rask ... -
Optimization of diffusion weighted-MRI: a study of T2 and ADC in healthy fibroglandular breast tissue
Øverdal, Mathias Finanger (Master thesis, 2019)Diffusjonsvektet magnetisk resonansavbildning er blitt stadig mer populært i deteksjon, gradering og evaluering av respons på behandling i brystkreft. Den tilsynelatende diffusjonskonstanten (ADC) reduseres i stor grad i ... -
Parallelization of Coherent Point Drift for patient registration
Knutsen, Gjert Magne Kahrs (Master thesis, 2019)Punktskyregistrering er en sentral del i enhver anvendelse der det er ønskelig å vite hvordan to sett av punkter hører sammen, for eksempel data fra medisinske undersøkelser. Det finnes et stort utvalg av ulike algoritmer ...