Sökning: "Diffusion Weighted Imaging"

Visar resultat 11 - 15 av 20 uppsatser innehållade orden Diffusion Weighted Imaging.

1. 11. Morphological characterization of neural tissue microstructure using the orientationally-averaged diffusion MRI signal

   Master-uppsats, Linköpings universitet/Avdelningen för medicinsk teknik

   Författare :Iulian Emil Tampu; [2019]
   Nyckelord :MRI; diffusion MRI; orientationally-averaged signal; powder-signal; microstructure;

   Sammanfattning : Diffusion-weighted magnetic resonance imaging (dMRI) is a powerful tool for thecharacterisation of neural tissue microstructural features. The role of neural projectioncurvature on the diffusion signal was recently studied for three temporal regimes of the diffusion pulse sequence in search for a description of the different decay trends in the orientationally-averaged diffusion signal reported in in vivo human studies. LÄS MER

3. 12. Diffusion MRI of Brain Tissue: Importance of Axonal Trajectory

   Master-uppsats, Lunds universitet/Fysiska institutionen; Lunds universitet/Kärnfysik

   Författare :Jan Brabec; [2018]
   Nyckelord :dMRI; diffusion magnetic resonance; axonal trajectory; axonal geometry; undulations; modeling; axons; inverse problem; diffusion spectrum; time-dependent diffusion; Physics and Astronomy;

   Sammanfattning : Obtaining microstructural information non-invasively on brain tissue remains a challenge. Diffusion magnetic resonance imaging (dMRI) is an imaging method that can provide such information. That includes geometrical considerations of nerve cells projections, axons, that are present in the white matter of the human brain. LÄS MER

4. 13. Användbarheten av diffusionsviktade sekvenser vid MRT för att påvisa uteruscancer En litteraturstudie

   Uppsats för yrkesexamina på grundnivå, Luleå tekniska universitet/Institutionen för hälsovetenskap

   Författare :Anna Sveder; Martin Lindberg; [2018]
   Nyckelord :Uterus cancer; diffusion-weighted imaging; sensitivity; specificity; diagnostic accuracy; ADC; b-value.; Uteruscancer; diffusionsviktad MRT; sensitivitet; specificitet; diagnostisk noggrannhet; ADC; b-värde.;

   Sammanfattning : Inledning: Uteruscancer är den sjätte vanligaste cancerformen hos kvinnor i världen. Ny forskning pekar på att diffusionsviktad magnetresonanstomografi (MRT) kan vara en tillförlitlig undersökningsmetod för att detektera patologiska förändringar i uterus. LÄS MER

5. 14. Routine Development for Artefact Correction and Information Extraction from Diffusion Weighted Echo Planar Images of Rats

   Master-uppsats, KTH/Skolan för teknik och hälsa (STH)

   Författare :Sandra Kraft; [2016]
   Nyckelord :Image Processing; Rats; Routine; Artefact correction; Diffusion Weighted Imaging; Echo Planar Imaging; Bildprocessning; Råtta; Rutin; Artefaktkorrigering; Diffusionsviktning; Eko-planarteknik;

   Sammanfattning : Biologists and physicians study complex biologic phenomena in which they use advanced imaging methods. They acquire images containing a lot of information which must be extracted in a correct way. This requires computer skills and knowledge in image processing methods which they seldom have. LÄS MER

7. 15. Routine Development for Artefact Correction and Information Extraction from Diffusion Weighted Echo Planar Images of Rats

   Master-uppsats, KTH/Skolan för teknik och hälsa (STH)

   Författare :Sandra Kraft; [2016]
   Nyckelord :Image Processing; Rats; Routine; Artefact correction; Diffusion Weighted Imaging; Echo Planar Imaging; Bildprocessning; Råtta; Rutin; Artefaktkorrigering; Diffusionsviktning; Eko-planarteknik;

   Sammanfattning : Biologists and physicians study complex biologic phenomena in which they use advanced imaging methods. They acquire images containing a lot of information which must be extracted in a correct way. This requires computer skills and knowledge in image processing methods which they seldom have. LÄS MER