Essays about: "magnetisk resonanstomografi"

Showing result 16 - 20 of 23 essays containing the words magnetisk resonanstomografi.

1. 16. VO2peak/THV-ratio differ between heart failure patients with preserved ejection fraction and healthy controls

   University essay from Högskolan Kristianstad/Sektionen för lärande och miljö

   Author : Calle Nilsson; [2017]
   Keywords : Heart failure; Magnetic Resonance Imaging; Cardiovascular Magnetic Resonance Imaging; Preserved Ejection Fraction; Total Heart Volume; Peak Oxygen Uptake; VO2peak THV ratio; Hjärtsvikt; magnetresonanstomografi; kardiovaskulär magnetresonanstomografi; bevarad ejektionsfraktion; total hjärtvolym; maximalt syreupptag; VO2peak THV -index;

   Abstract : Heart failure is a term for a group of complex symtoms characterized by reduced heart function. One of these syndromes, referred to as heart failure with preserved ejection fraction (HFpEF), has increased in prevalence compared to other types of heart failures during the recent years. READ MORE

3. 17. High-­dose rate intraluminal brachytherapy for oesophageal cancer using MR imaging: A clinical implementation

   University essay from Lunds universitet/Sjukhusfysikerutbildningen; Lunds universitet/Medicinsk strålningsfysik, Lund

   Author : Rrezarta Reci; [2015]
   Keywords : Medicine and Health Sciences;

   Abstract : Purpose: The aim of this study was to investigate a new methodology for brachytherapy of oesophageal cancer using magnetic resonance (MR) imaging for treatment planning. That includes finding a suitable oesophageal applicator that can be visualised on MR images and to create dose and fraction schedule that should be used brachytherapy treatments. READ MORE

4. 18. Extracting Cardiac and Respiratory Self-Gating Signals from Magnetic Resonance Imaging Data

   University essay from KTH/Skolan för teknik och hälsa (STH)

   Author : Rebecca Hellström Karlsson; Tobias Peterson; [2015]
   Keywords : MRI; MR; magnetic resonance imaging; SG; self-gating; cardiac; cardiac MRI; sliding window reconstruction; motion artefacts; motion correction; 3D; signal filtering; MRI; MR; magnetisk resonanstomografi; SG; self-gating; hjärta; hjärt-MR; sliding window reconstruction; signalfiltrering; rörelseartefakter; rörelsekorrigering; 3D;

   Abstract : Motion artefacts due to cardiac and respiratory motion present a daily challenge in cardiac Magnetic Resonance Imaging (MRI), and many different motion correction procedures are used in clinical routine imaging. To reduce motion artefacts further, patients are required to hold their breath during parts of the data acquisition, which is physically straining – especially when done repetitively. READ MORE

5. 19. Variations in the target definition on CT and MR based treatment plans for radiotherapy

   University essay from Umeå universitet/Centrum för medicinsk teknik och fysik (CMTF); Umeå universitet/Institutionen för fysik

   Author : Sara Svensson; [2014]
   Keywords : Magnetic resonance; computed tomography; radiotherapy; target definition; margins; prostate cancer; Magnetisk resonanstomografi; datortomografi; strålterapi; targetritning; prostatacancer;

   Abstract : The introduction of Magnetic Resonance (MR) Imaging in treatment planning for radiotherapy of prostate cancer give rise to new challenges in defining the treatment volume, or the target. Imaging with MR have several advantages, especially better soft-tissue contrast, compared with the standard image modality, Computed Tomography (CT). READ MORE

6. 20. Spatial variation of radio frequency magnetic field exposure from clinical pulse sequences in 1.5T MRI

   University essay from Umeå universitet/Institutionen för fysik

   Author : Andreas Forsberg; [2014]
   Keywords : magnetic resonance; exposure; rf; magnetic field strength; crawford cell; magnetisk resonanstomografi; exponering; rf; magnetisk fältstyrka; crawford cell;

   Abstract : Cell biological exposure studies in magnetic resonance imaging (MRI) environment, where a complex mixture of strong magnetic fields are present, have attracted considerable interest in recent years. The outcome of such studies might depend strongly on the conditions, for example exposure parameters and spatial variations of exposure. READ MORE