Browsing Fakultet for medisin og helsevitenskap (MH) by Title
Now showing items 14362-14381 of 15139
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Ultrasound beams for enhanced image quality
(Dissertations at the Faculty of Medicine, 0805-7680; 2008-152, Doctoral thesis, 2008)The contents of this thesis consider new methods for generating ultrasound beams for enhanced image quality in medical imaging. The results presented are produced through computer simulations. The thesis consists of an ... -
Ultrasound cardiac modeling, segmentation and tracking
(Doktoravhandlinger ved NTNU, 1503-8181; 2013:79, Doctoral thesis, 2013)Echocardiography plays a key role in assessing cardiac diseases, especially in evaluating left ventricular (LV) function. It enables real-time, non-invasive, and relatively low cost acquisition of cardiac images. Furthermore, ... -
Ultrasound detection of vascular decompression bubbles: The influence of new technology and considerations on bubble load
(Journal article; Peer reviewed, 2014)INTRODUCTION: Diving often causes the formation of 'silent' bubbles upon decompression. If the bubble load is high, then the risk of decompression sickness (DCS) and the number of bubbles that could cross to the arterial ... -
Ultrasound guided surgery in patients with intracranial tumours
(Doktoravhandlinger ved NTNU, 1503-8181; 2011:98, Doctoral thesis, 2011) -
Ultrasound imaging in neurosurgery: Delineation of tumours for resection control
(Doktoravhandlinger ved NTNU, 1503-8181; 2013:85, Doctoral thesis, 2013)Complete removal, as opposed to only partial removal, of all macroscopic tumor tissue is associated with longer survival for most of the brain tumours. Ultrasound is an imaging technique that can contribute to increase the ... -
Ultrasound imaging of blood flow based on high frame rate acquisition and adaptive signal processing
(Doktoravhandlinger ved NTNU, 1503-8181; 2013:54, Doctoral thesis, 2013)Ultrasound imaging of blood flow is in widespread use for assessment of atherosclerotic disease. Imaging of the carotid arteries is of special interest, as blood clots from atherosclerotic plaques may follow the blood ... -
Ultrasound Improves the Delivery and Therapeutic Effect of Nanoparticle-Stabilized Microbubbles in Breast Cancer Xenografts
(Journal article; Peer reviewed, 2017)Compared with conventional chemotherapy, encapsulation of drugs in nanoparticles can improve efficacy and reduce toxicity. However, delivery of nanoparticles is often insufficient and heterogeneous because of various ... -
Ultrasound in image-guided spine surgery: Enabling technologies and first steps
(Doctoral theses at NTNU;2018:257, Doctoral thesis, 2018)Most people experience back pain at some point in their life. While most of these conditions are treated nonoperatively, surgical treatment has been shown to be both effective and cost effective compared to nonoperative ... -
Ultrasound speckle reduction using generative adversial networks
(Journal article; Peer reviewed, 2018)Generative adversial networks (GANs) have shown its ability to create realistic and accurate image-to-image transformation. The goal of this work was to investigate whether deep convolutional GANs can learn to perform ... -
Ultrasound Strain Rate Imaging of Individual Muscle Motor Units
(Journal article; Peer reviewed, 2014)Skeletal muscle is organized in motor units, each comprising a motor neuron and all its connected muscle fibres. The arrival of an action potential (a neural “impulse”) causes the fibers to contract, they exhibit a twitch. ... -
Ultrasound-based Estimation of Strain in Abdominal Aortic Aneurysm
(Doktoravhandlinger ved NTNU, 1503-8181; 2012:369, Doctoral thesis, 2012)Abdominal aortic aneurysm (AAA) is a vascular disease resulting in a permanent local dilatation of the abdominal aorta. Different studies estimate the prevalence of AAA to 1.3-8.9% of men and 1.0-2.2% of women over 60 years ... -
Ultrasound-based quantification of myocardial deformation and rotation
(Doktoravhandlinger ved NTNU, 1503-8181; 2009:33, Doctoral thesis, 2009) -
Ultrasound-mediated delivery and distribution of polymeric nanoparticles in the normal brain parenchyma of a metastatic brain tumour model
(Journal article; Peer reviewed, 2018)The treatment of brain diseases is hindered by the blood-brain barrier (BBB) preventing most drugs from entering the brain. Focused ultrasound (FUS) with microbubbles can open the BBB safely and reversibly. Systemic drug ... -
Ultrasound-mediated delivery enhances therapeutic efficacy of MMP sensitive liposomes
(Peer reviewed; Journal article, 2020)To improve therapeutic efficacy of nanocarrier drug delivery systems, it is essential to improve their uptake and penetration in tumour tissue, enhance cellular uptake and ensure efficient drug release at the tumour site. ... -
Ultrasound-Mediated Delivery of Chemotherapy into the Transgenic Adenocarcinoma of the Mouse Prostate Model
(Peer reviewed; Journal article, 2020)Ultrasound (US) in combination with microbubbles (MB) has had promising results in improving delivery of chemotherapeutic agents. However, most studies are done in immunodeficient mice with xenografted tumors. We used two ... -
UMP-CMP kinase 2 gene expression in macrophages is dependent on the IRF3-IFNAR signaling axis
(Peer reviewed; Journal article, 2021)Toll-like receptors (TLRs) are highly-conserved pattern recognition receptors that mediate innate immune responses to invading pathogens and endogenous danger signals released from damaged and dying cells. Activation of ... -
Unaccompanied refugee youths experiences of health, healthcare services and taking care of health in the Nordic countries- a scoping review
(Master thesis, 2021)For many years young minor refugees have arrived together with their families, but since 2005 the number of unaccompanied refugees arriving in the EU has increased. Unaccompanied refugee minors are a heterogenous group, ... -
Uncertainty quantification and sensitivity analysis for computational FFR estimation in stable coronary artery disease
(Journal article; Peer reviewed, 2018)Purpose The main objectives of this study are to validate a reduced-order model for the estimation of the fractional flow reserve (FFR) index based on blood flow simulations that incorporate clinical imaging and ... -
Uncontrolled manifold analysis of gait kinematic synergy during normal and narrow path walking in individuals with knee osteoarthritis compared to asymptomatic individuals
(Journal article, 2022)Knee osteoarthritis (KOA) is a common musculoskeletal disorder resulting in altered gait patterns. Uncontrolled manifold (UCM) analysis has been demonstrated as a useful approach for quantitative analysis of motor variability ... -
Underernæring hos hjemmeboende personer med mild grad av demens
(Bachelor thesis, 2015)NORSK: Bakgrunn: Underernæring gir alvorlige konsekvenser for allmenntilstand og livskvalitet. Eldre hjemmeboende personer med demens er en særlig utsatt pasientgruppe. Norges politiske utvikling legger føringer for at ...