Essays about: "magnetresonanstomografi bilder"

Showing result 1 - 5 of 10 essays containing the words magnetresonanstomografi bilder.

1. 1. Image-driven simulation of brain tumors using a reaction-diffusion mathematical model

   University essay from Linköpings universitet/Avdelningen för medicinsk teknik

   Author : Kristos Qiqi; [2023]
   Keywords : brain tumor; cancer; mathematical model; simulation; magnetic resonance images; hjärntumör; cancer; matematisk model; simulering; magnetresonanstomografi bilder;

   Abstract : Brain tumors pose a big challenge in the field of neuro-oncology. Gliomas are the largest subgroup. Magnetic resonance imaging is a non-invasive tool for detecting and characterizing these tumors. Mathematical models, such as the reaction-diffusion equation, can be used for understanding the intricate behavior of gliomas. READ MORE

3. 2. Domain Adaptation for Multi-Contrast Image Segmentation in Cardiac Magnetic Resonance Imaging

   University essay from KTH/Skolan för kemi, bioteknologi och hälsa (CBH)

   Author : Thomas Proudhon; [2023]
   Keywords : Cardiac Magnetic Resonance Imaging; Deep Learning; Domain Adaptation; Unsupervised Segmentation; Image-to-image Translation;

   Abstract : Accurate segmentation of the ventricles and myocardium on Cardiac Magnetic Resonance (CMR) images is crucial to assess the functioning of the heart or to diagnose patients suffering from myocardial infarction. However, the domain shift existing between the multiple sequences of CMR data prevents a deep learning model trained on a specific contrast to be used on a different sequence. READ MORE

4. 3. Characterization of Radiomics Features Extracted from Images Generated by the 0.35 T Scanner of an Integrated MRI-Linac

   University essay from Lunds universitet/Sjukhusfysikerutbildningen

   Author : Rebecka Ericsson Szecsenyi; [2020]
   Keywords : Medicine and Health Sciences;

   Abstract : Purpose: In an era of personalized oncology where the aim is to give every patient the right treatment at the right time an area of promising research is emerging called radiomics, or quantitative image analysis. The main underlying hypothesis is that pathophysiological information can be found in image texture not visible to the bare eye that can improve diagnosis, treatment adaption or be linked to a certain clinical outcome. READ MORE

5. 4. Correction of Radial Sampling Trajectories by Modeling Nominal Gradient Waveforms and Convolving with Gradient Impulse Response Function

   University essay from KTH/Medicinteknik och hälsosystem

   Author : Max Kim; Adham Belbaisi; [2019]
   Keywords : Magnetic resonance imaging; MRI; gradient waveforms; radial sampling; gradient imperfections; gradient impulse response function; GIRF; Magnetresonanstomografi; MRI; gradient vågformer; radiell sampling; gradient imperfektioner; gradient impulsresponsfunktion; GIRF;

   Abstract : There are several reasons for using non-Cartesian k-space sampling methods in Magnetic Resonance Imaging (MRI). Such a method is radial sampling, which includes the advantage of continuous coverage of the k-space center which results in higher robustness to motion. READ MORE

6. 5. Coil Sensitivity Estimation and Intensity Normalisation for Magnetic Resonance Imaging

   University essay from KTH/Medicinteknik och hälsosystem

   Author : Rebecka Herterich; Anna Sumarokova; [2019]
   Keywords : Image reconstruction; Magnetic Resonance Imaging; sensitivity encoding; Parallell imaging; Coil sensitivity; ISMRM raw data; Magnetresonanstomografi; känslighetskodning; bildrekonstruktion; Parallell imaging; Spolkänslighet; ISMRMRD;

   Abstract : The quest for improved efficiency in magnetic resonance imaging has motivated the development of strategies like parallel imaging where arrays of multiple receiver coils are operated simultaneously in parallel. The objective of this project was to find an estimation of phased-array coil sensitivity profiles of magnetic resonance images of the human body. READ MORE