Sökning: "Focused ultrasound"

Visar resultat 1 - 5 av 14 uppsatser innehållade orden Focused ultrasound.

  1. 1. Acoustic Focusing of Lysozyme Crystals

    Master-uppsats, KTH/Tillämpad fysik

    Författare :Måns Junestrand; [2023]
    Nyckelord :Protein Crystals; Lysozyme Crystals; Ultrasound; Acoustic Focusing; SFX; Biomedical Physics; Proteinkristaller; Ultraljud; Lysozymkristaller; Akustisk fokusering; SFX; Biomedicinsk fysik;

    Sammanfattning : Acoustic focusing of microscale protein crystals with acoustophoresis technology could reduce clogs during experiments with the scientific technique serial femtosecond x-ray crystallography (SFX). SFX determines molecular structures of proteins, these structures are valuable in drug discovery and fundamental biomedical research. LÄS MER

  3. 2. Methods for determining focal point and delay for ultrasound arrays and multichannel electronics

    Master-uppsats, Lunds universitet/Avdelningen för Biomedicinsk teknik

    Författare :Svante Rosenlind; [2023]
    Nyckelord :Focusing algorithms; k-wave; Spatiotemporal inverse filter; Gerchberg- Saxton algorithm; Focused ultrasound; Technology and Engineering;

    Sammanfattning : High intensity focused ultrasound is a growing technique for tissue ablation, among other uses, and given its destructive capabilities, there is a need for control of where the energy is delivered. There exist a number of methods for focusing such ultrasound arrays, but these often assume prior knowledge of the impulse response, or require extensive full-system simulations. LÄS MER

  4. 3. A viscoelastic evaluation of an injectable disulfide cross-linked thiol-collagen hydrogel: for tissue bulking post-myocardial infarction to prevent heart failure

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Makromolekylär kemi

    Författare :Karin Dungner; [2023]
    Nyckelord :;

    Sammanfattning : Cardiovascular diseases are currently the leading cause of death globally. Progression of the disease affects the composition and function of the heart and in many cases subsequently results in heart failure over time where a heart transplant is vital. Therefore, there is a need for medical treatments to stop the progression of the disease. LÄS MER

  5. 4. Histological evaluations of mesenchymal stem cell therapy in a preterm IVH rabbit model.

    M1-uppsats, Malmö universitet/Institutionen för biomedicinsk vetenskap (BMV)

    Författare :Emma Tordebrand; [2022]
    Nyckelord :histochemistry; immunofluorescence; immunohistochemistry; intraventricular hemorrhage; mesenchymal stem cells; peroxidase stain; rabbit brain; histokemi; immunfluorescens; immunhistokemi; intraventrikulär blödning; kaninhjärna; mesenkymala stamceller; peroxidasfärgning;

    Sammanfattning : Human mesenchymal stem cell (MSC) therapy has shown neuroprotective effects and improvement on recovery from neonatal intraventricular hemorrhage (IVH). This study focused on histological evaluations of human amniotic fluid MSC therapy during early prenatal life in a preterm IVH rabbit model. LÄS MER

  7. 5. Development of a Tool for Imaging the Pumping-Out Behavior of Poly- Vinyl Alcohol Shelled Microbubbles

    Master-uppsats, KTH/Skolan för kemi, bioteknologi och hälsa (CBH)

    Författare :Stina Hägglund; [2020]
    Nyckelord :Microbubbles; Pumping-out behavior; Verasonics; Ultrasound; Ultrafast imaging;

    Sammanfattning : For many years, microbubbles have been used as ultrasound contrast agents to improve the quality of diagnostics, seeing that they produce more backscattering ultrasound than blood does. Novel types of microbubbles and increased knowledge about their different behaviors have led to other suggested areas of use. LÄS MER