Sökning: "B-mode imaging"

Visar resultat 1 - 5 av 9 uppsatser innehållade orden B-mode imaging.

  1. 1. Implementation of Super-Resolution Ultrasound Imaging for in Vitro Experiments

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

    Författare :Kani Yara; [2022]
    Nyckelord :B-mode; Localization; Microbubbles; Poly-Vinyl-Alcohol; Tracking; Verasonics; B-mode; Localisering; Mikrobubblor; Poly-Vinyl-Alcohol; Spårning; Verasonics;

    Sammanfattning : Ultrasound imaging systems are a safe and affordable imaging modality with the disadvantage of low spatial resolution, especially for assessing smaller vessels. However, with the implementation of super-resolution ultrasound imaging techniques, studies have shown promising results in achieving a resolution below the diffraction limit. LÄS MER

  3. 2. Utvärdering av en billig ultraljudsmaskin med avseende på bildkvalitet och temperaturökning

    Kandidat-uppsats, KTH/Medicinteknik och hälsosystem

    Författare :Yulia Dragunova; Joakim Anderberg; [2021]
    Nyckelord :Ultrasound; Temperature Increase; Spatial Resolution; Reflection; B-mode; Ultraljud; Temperaturökning; Spatial upplösning; Reflektion; B-mode;

    Sammanfattning : Ultraljudsdiagnostik baseras på propagering av mekaniska vågor och används för att avbilda tvärsnitt av kroppen i realtid. Prestandan, med avseende på kontrast, upplösning och måttmätningar, av CONTEC CMS600B-3, en relativ billig maskin är av intresse. LÄS MER

  4. 3. Image Contrast Enhancement using Poly Vinyl Alcohol Microbubble Response to High MI Ultrasound

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

    Författare :Mohammed R. A. Rashid; [2018]
    Nyckelord :high MI ultrasound; microbubble; PVA; mechanical index; Verasonics; contrast enhancment;

    Sammanfattning : The induced rupturing of Poly Vinyl Alcohol (PVA) microbubbles with high mechanical index (MI)ultrasound beam is used in multiple medical application such as drug delivery, image contrastenhancement and perfusion imaging.In this work, Triggered imaging technique with subtraction algorithm is used to enhance themicrobubble’s (MB) contrast over tissue (CTR). LÄS MER

  5. 4. Subharmonic Imaging of Polymer-Shelled Contrast Agents

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

    Författare :Rúnar Sigmundsson; [2018]
    Nyckelord :Ultrasound Imaging; Contrast Enhanced Ultrasound Imaging; Contrast Agents; PVA Contrast Agents;

    Sammanfattning : The harmonic generation due to the nonlinear behavior of Ultrasound Contrast Agents (UCAs) must be exploited for improved efficiency when imaging vascular targets in the neighborhood of highly echogenic tissue. One may even further improve the efficiency by focusing on the subharmonic generation of the UCAs, which is an even more exclusive property than the generation of higher harmonics, for improved Contrast-to-Tissue ratio (CTR). LÄS MER

  7. 5. From RF signals to B-mode Images Using Deep Learning

    Master-uppsats, KTH/Medicinteknik och hälsosystem

    Författare :Jing Ren; [2018]
    Nyckelord :Deep learning; Ultrasound; B-mode imaging; RF signals;

    Sammanfattning : Ultrasound imaging is a safe and popular imaging technique that relies on received radio frequency (RF) echos to show the internal organs and tissue. B-mode (Brightness mode) is the typical mode of ultrasound images generated from RF signals. LÄS MER