Blar i NTNU Open på forfatter "Wigen, Morten Smedsrud"
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4D ultrasound vector flow imaging for intraventricular flow assessment
Wigen, Morten Smedsrud (Doctoral theses at NTNU;2019:38, Doctoral thesis, 2019)4D ultralyd vector flow avbildning for evaluering av blodstrøm i hjertet Ultralyd er den mest utbredte modaliteten for evaluering av hjertefunksjon grunnet tilgjengelighet, lav kostnad og sanntidsvisning. Ekkokardiografi ... -
A fast 4D B-spline framework for model-based reconstruction and regularization in vector flow imaging
Grønli, Thomas; Wigen, Morten Smedsrud; Segers, Patrick; Løvstakken, Lasse (Journal article; Peer reviewed, 2018)A generic framework for model-based regularization and reconstruction is described, with applications in a wide range of noisy measurement scenarios. The framework employs automatic differentiation and stochastic gradient ... -
A Scientific Tool for Real-time Acquisition and Analysis of Cardiovascular Measurements: Including ultrasound and other physiological data sources
Wigen, Morten Smedsrud (Master thesis, 2013)En programvare for studier av karsystemet, for både eksperimentelle og kliniske forsøk, skal utvikles i denne oppgaven. Data fra både ultralyd og andre fysiologiske kilder, som trykk, blodstrøm og volum, skal kunne mottas ... -
Blood Speckle-Tracking Based on High–Frame Rate Ultrasound Imaging in Pediatric Cardiology
Nyrnes, Siri Ann; Fadnes, Solveig; Wigen, Morten Smedsrud; Mertens, Luc; Løvstakken, Lasse (Peer reviewed; Journal article, 2020)Background: Flow properties play an important role in cardiac function, remodeling, and morphogenesis but cannot be displayed in detail with today’s echocardiographic techniques. The authors hypothesized that blood ... -
Detailed flow visualization in fetal and neonatal hearts using 2-D speckle tracking
Fadnes, Solveig; Nyrnes, Siri Ann; Wigen, Morten Smedsrud; Tegnander, Eva; Løvstakken, Lasse (Journal article, 2016)Two-dimensional blood speckle tracking has shown promise for measuring the complex flow patterns in neonatal hearts when based on linear array and high-frame-rate plane wave imaging. For phased array pediatric imaging, ... -
In vivo intracardiac vector flow imaging using phased array transducers for pediatric cardiology
Fadnes, Solveig; Wigen, Morten Smedsrud; Nyrnes, Siri Ann; Løvstakken, Lasse (Journal article; Peer reviewed, 2017)Two-dimensional blood speckle tracking (ST) has shown promise for measuring complex flow patterns in neonatal hearts using linear arrays and high-frame-rate plane wave imaging. For general pediatric applications, however, ...