Essays about: "magnetic water"

Showing result 11 - 15 of 81 essays containing the words magnetic water.

  1. 11. Polymer gel dosimetry - Using MRI-readout, simplified relatively non-toxic mixing procedure tested on FLASH

    University essay from Lunds universitet/Sjukhusfysikerutbildningen

    Author : Maria Blomstedt; [2022]
    Keywords : Medicine and Health Sciences;

    Abstract : Background: One of the polymer gel dosimeters available today is the N-isopropylamide (NIPAM) polymer gel dosimeter which has a less toxic monomer compared to other polymer gels and the advantage of being able to be manufactured under normal oxygen levels. Polymer gel dosimeters in general are advantageous independent dosimeters to use for verification of new radiation treatment techniques due to its favorable qualities such as very high resolution, 3D coverage, tissue equivalence and independence of energy and incident direction of the radiation beam. READ MORE

  3. 12. Analyzing the use of Humidity Cue in Navigation of Drosophila melanogaster

    University essay from Lunds universitet/Avdelningen för Biomedicinsk teknik

    Author : Kalle Andersson; [2022]
    Keywords : Technology and Engineering;

    Abstract : Humidity is one of the main abiotic factor of ecosystems and affects animals behaviour, fitness and distribution. Due to their small size and inability to thermoregulate using metabolism, insects, such as the fruit fly Drosophila Melanogaster, are especially reliant on humidity. READ MORE

  4. 13. Inverse source modeling of roll induced magnetic signature

    University essay from Uppsala universitet/Avdelningen för beräkningsvetenskap

    Author : Erik Thermaenius; [2022]
    Keywords : inverse modeling; inverse; modeling; magnetic; signature; source modeling; tikhonov; roll; magnetic silencing; regularization; regularisation; induction; dipole; dipoles; Helmholtz; inversmodellering; magnetisk; signatur; källmodellering; rullning; rullningsinducerad; regularisering; dipol; dipoler;

    Abstract : Vessels constructed in electrically conductive materials give rise to frequency-dependent, induced magnetic fields when waves of water cause them to roll in the Earth's magnetic field. These fields, typically referred to as roll-induced magnetic vortex fields, are a component of the ship's overall signature, where signature refers to measurable quantities which can reveal or identify objects. READ MORE

  5. 14. Radiofrequency-Induced Heating of a Deep Brain Stimulator Lead inside TEM Cells and inside a 3T MR-Scanner

    University essay from Umeå universitet/Radiofysik

    Author : Haider Shaban; [2022]
    Keywords : Medical Physics; MRI; ;

    Abstract : The use of non-ionizing radiation in the magnetic resonance imaging (MRI) made it a safer diagnostic technique in comparison to the X-ray imaging method. MRI can also produce soft tissue images with a very high contrast without contrast agent which is another advantage that made MRI an important imaging technique for studying the mechanism of the deep brain stimulation (DBS) and for targeting the desired regions in the brain that should be stimulated. READ MORE

  6. 15. Development of a post-processing pipeline for Myelin Water Imaging at 7 T

    University essay from Lunds universitet/Avdelningen för Biomedicinsk teknik

    Author : Petter Clemensson; Elliot Berthold; [2022]
    Keywords : Magnetic Resonance Imaging; Myelin Water Imaging; Neuroimaging; Technology and Engineering;

    Abstract : Myelin water imaging, MWI, is a non-invasive method used for quantifying the amount of myelin in the brain that can aid the understanding of brain plasticity and neurodegenerative diseases, such as Multiple Sclerosis (MS). Conventional MWI is done at a field strength of 3 T, though there are indications that higher field strength may lead to higher resolution images. READ MORE