Essays about: "MR"

Showing result 21 - 25 of 328 essays containing the word MR.

1. 21. Evaluation of a Novel Reconstruction Framework for Gamma Knife Cone-Beam CT - The Impact of Scatter Correction and Noise Filtering on Image Quality and Co-registration Accuracy

   University essay from KTH/Fysik

   Author : Ida Hägnestrand; [2023]
   Keywords : Gamma Knife; Cone-beam computed tomography; Image quality; Image reconstruction; Co-registration; Contrast; Uniformity; Spatial resolution; Scatter correction; Wiener filter; Noise filter; Patient positioning; Stereotactic radiosurgery; Gammakniv; Strålkniv; Cone-Beam Computed Tomography; Bildkvalitet; Bildrekonstruktion; Co-registrering; Kontrast; Uniformitet; Spatial upplösning; Spridningskorrigering; Wienerfilter; Brusfilter; Stereotaktisk strålkirurgi;

   Abstract : The Gamma Knife is a non-invasive stereotactic radiosurgery system used for treatments of deep targets in the brain. Accurate patient positioning is needed for precise radiation delivery to the target. READ MORE

3. 22. 2D or not 2D: Assessing environmental awareness and cognitive load in mixed reality data visualizations : Visualizing gas leak data visualizations for an industrial surveying setting

   University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

   Author : Julia Schwuchow; [2023]
   Keywords : environmental awareness; cognitive load; information visualization; mixed reality; sustainable HCI; miljomedvetenhet; kognitiv belastning; informationsvisualisering; mixad ¨ verklighet; hallbar MDI;

   Abstract : Increasing the environmental awareness of invisible data, such as a city’s air pollution or a household’s energy consumption, has been an ongoing information visualization challenge that has entered the fields of immersive technologies like augmented (AR) and mixed reality (MR). In order to understand how form and dimensional affect this understanding for MR environments, this research investigated what the difference between statistical, iconographic 2D and physical 3D visualizations is with regards to minimizing cognitive load and fostering environmental awareness. READ MORE

4. 23. Synthesizing of brain MRE wave data

   University essay from KTH/Medicinsk avbildning

   Author : Maryia Yuliuhina; [2023]
   Keywords : MR elastography; brain MRE; synthetic data; computational modeling; shear wave elastography; MR-elastografi; hjärn MRE; syntetiska data; beräkningsmodellering; skjuvvåg elastografi;

   Abstract : Magnetic resonance elastography (MRE) is an imaging technique that allows for non-invasive access to the physical properties of body tissues. MRE has great potential, but it is difficult to conduct research due to the time-consuming estimation of stiffness maps, which could be speeded up by using neural network. READ MORE

5. 24. Comparing MR/VR implementations in flight training simulation

   University essay from Stockholms universitet/Institutionen för data- och systemvetenskap

   Author : Kexin Wang; [2023]
   Keywords : Virtual Reality; Mixed Reality; Flight training; Psychological fidelity; ergonomic fidelity;

   Abstract : The use of Extended Reality(XR) technologies for training is gaining popularity, and flight training is one field that has begun experimenting with the best implementation for their needs. Both Virtual Reality (VR) and Mixed Reality (MR) have been used in flight simulators, but it is unclear which is the better fit. READ MORE

6. 25. Automatic Detection of Common Signal Quality Issues in MRI Data using Deep Neural Networks

   University essay from Linköpings universitet/Institutionen för medicinsk teknik

   Author : Erika Ax; Elin Djerf; [2023]
   Keywords : mr; magnetic resonance; machine learning; deep learning; anomaly detection; U-Net; autoencoder; 3D; classification; reconstruction; artefacts;

   Abstract : Magnetic resonance imaging (MRI) is a commonly used non-invasive imaging technique that provides high resolution images of soft tissue. One problem with MRI is that it is sensitive to signal quality issues. The issues can arise for various reasons, for example by metal located either inside or outside of the body. READ MORE