Essays about: "registration motion"

Showing result 1 - 5 of 24 essays containing the words registration motion.

  1. 1. Validation of a cat activity monitor

    University essay from SLU/Dept. of Clinical Sciences

    Author : Daria Ketrzynska; [2023]
    Keywords : accelerometer-based activity monitor; activity; physical activity; monitor collar; cat; feline; validation; diabetes; drinking; urination;

    Abstract : Early detection of diseases and injuries in animals is crucial for their health and well-being. Early diagnosis can be assisted by objective registration of different types of physical activities or behaviour patterns. READ MORE

  3. 2. Respiratory Motion Correction in PET Imaging: Comparative Analysis of External Device and Data-driven Gating Approaches

    University essay from KTH/Fysik

    Author : Nina Lindström Söraas; [2023]
    Keywords : PET CT; Tomographic reconstruction; Respiratory gating techniques; Image registration; Motion correction; PET CT; Tomografisk rekonstruktion; Gating tekniker; Bildregistrering; Rörelsekorrigering;

    Abstract : Positron Emission Tomography (PET) is pivotal in medical imaging but is prone to artifactsfrom physiological movements, notably respiration. These motion artifacts both degradeimage quality and compromise precise attenuation correction. READ MORE

  4. 3. Spatiotemporal PET reconstruction with Learned Registration

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

    Author : Pierre Meyrat; [2022]
    Keywords : PET; Tomographic reconstruction; Deep Learning; MLEM; PET; Tomografisk rekonstruktion; Deep Learning; MLEM;

    Abstract : Because of the long acquisition time of Positron Emission Tomography scanners, the reconstructed images are blurred by motion. We hereby propose a novel motion-correction maximum-likelihood expectation-maximization algorithm integrating 3D movements between the different gates estimated by a neural network trained on synthetic data with contrast invariance. READ MORE

  5. 4. Quantification and Detection of Motion Artifacts in Laser Speckle Contrast Imaging

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

    Author : Dennis Amphan; [2022]
    Keywords : Laser speckle contrast imaging; Image registration; Motion artifacts; Detection;

    Abstract : Laser speckle contrast imaging (LSCI) is a non-invasive method for assessment of microcirculatory blood flow. The technique is based on analysis of speckle patterns to build 2D maps of perfusion with high spatial and temporal resolution. READ MORE

  6. 5. A comparison between Actigraph-GT9X Link and Actiwatch 2, by analyzing different sleep variables

    University essay from Uppsala universitet/Institutionen för kvinnors och barns hälsa

    Author : Hanna Wallin; [2022]
    Keywords : Sleep registration; Movement registration; Activity monitor; Sleep diary; Free-living environment;

    Abstract : Sleep is very important for health and academic performance. The amount of sleep is variable and depends among other things, on the age of the individual. Today there are many varieties of motion sensors that can be used in healthcare and clinical research for sleep registration, such as Actigraph GT9X Link and Actiwatch 2. READ MORE