Essays about: "vascular ultrasound"

Showing result 1 - 5 of 6 essays containing the words vascular ultrasound.

  1. 1. Venous Component Separation From a Pulse Oximeter Signal using Blind Source Separation with Ultrasound Imaging as Reference

    University essay from Lunds universitet/Avdelningen för Biomedicinsk teknik

    Author : Björn Walter; Stefan Piiroinen; [2021]
    Keywords : Photoplethysmogram; PPG; Ultrasound; Blind Source Separation; PCA; SOBI; venous component; Technology and Engineering;

    Abstract : Intradialytic hypotension (IDH) is a major drawback of haemodialysis and occurs in more than every fifth dialysis treatment. There is a need for real-time measurement, with an ability to detect IDH before it occurs. Photoplethysmography (PPG) may provide sufficient information about hemodynamic status to prevent IDH. READ MORE

  3. 2. Development of Ultrasound Pulse Sequences for Acoustic Droplet Vaporization

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

    Author : Isabelle Gouwy; [2019]
    Keywords : Ultrasound; Ultrasound contrast agents; Phase-change contrast agents; Acoustic droplet vaporization; Verasonics;

    Abstract : Ultrasound-mediated drug delivery has been proposed as a safe and non-invasive method to achieve localized drug release. Drug-loaded microbubbles are injected in the vascular system and ultrasound waves are then used to localize and burst the microbubbles at a specific targeted area. READ MORE

  4. 3. A Study of Vascular Plaque in the Carotid

    University essay from KTH/Skolan för teknikvetenskap (SCI)

    Author : Victor Thun; Kristin Salmi; [2018]
    Keywords : ;

    Abstract : In 2015, cardiovascular diseases caused the death of 17.7 million people - 31 % of all deaths globally - making it deadlier than any other cause.Cardiovascular diseases often result from Arteriosclerosis, a disease where plaque builds up and clogs arteries. READ MORE

  5. 4. Non-invasive ultrasound measurements of vascular impedance

    University essay from Lunds universitet/Avdelningen för Biomedicinsk teknik

    Author : Roger Larsson; [2018]
    Keywords : Ultrasound; ultrafast ultrasound imaging; vascular impedance; pulse wave velocity; motion tracking; Technology and Engineering;

    Abstract : Despite its introduction in the early 1950´s, vascular impedance has yet to be applied in clinical use to predict early stages of cardiovascular disease (CVD). It is defined as the ratio between blood pressure and flow and describes the opposition to blood flow within the cardiovascular system. READ MORE

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

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

    Author : Rúnar Sigmundsson; [2018]
    Keywords : Ultrasound Imaging; Contrast Enhanced Ultrasound Imaging; Contrast Agents; PVA Contrast Agents;

    Abstract : 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). READ MORE