Browsing Institutt for sirkulasjon og bildediagnostikk by Document Types "Chapter"
Now showing items 1-16 of 16
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Better Automatic Interpretation of Cement Evaluation Logs through Feature Engineering
(Chapter, 2021)We build systems to automatically interpret cement evaluation logs using supervised machine learning (ML). Such systems can provide instant rough interpretations that may then be used as a basis for human interpretation. ... -
Determining Inner Geometry Properties From Eccentered Pulse-Echo Measurements in a Pipe
(Chapter, 2021)In the petroleum industry, well integrity evaluation is an essential part of maintaining the safety and sustainability of hydrocarbon production. Ultrasonic pulse-echo cased hole logging is a widely used type of measurement ... -
A fast semi-analytical method for propagating leaky Lamb wavefields
(Chapter, 2021)A fast method is presented for calculating the wavefields from initialized leaky Lamb waves on plates immersed in sufficiently light fluids. The method works by precomputing the dispersion relation and attenuation, and ... -
Getting started with acoustic well log data using the dlisio Python library on the Volve Data Village dataset
(Chapter, 2020)Three issues have long impeded academic research and teaching on well logging. First, real measured data has been hard to come by. This has now been alleviated by Equinor's 2018 release of the Volve Data Village dataset. ... -
Inhomogeneous P- and S-wavefields radiated into isotropic elastic solids
(Chapter, 2022)A vibrating surface in contact with a solid material will generate P- and S-waves in the solid. When the surface vibration is spatially attenuated, we must take into account that the generated waves are always inhomogeneous. ... -
Laboratory experiments on ultrasonic logging through casing for barrier integrity validation
(Chapter, 2017)Verification of annular barriers is essential for well integrity, with ultrasonic methods being central in well integrity testing for many decades. By doing ultrasonic pitch-catch measurements on a bench top laboratory ... -
Left-Ventricular Volume Estimation in Contrast-Enhanced Echocardiography Using Deep Learning
(Chapter, 2023)Accurate estimation of left ventricular (LV) volume is important for the diagnosis and management of cardiac disease. Contrast-enhanced ultrasound (CEUS) helps improve the visualization of the endocardial borders and is ... -
Method for Designing Semantic Annotation of Sepsis Signs in Clinical Text
(Chapter, 2023)Annotated clinical text corpora are essential for machine learning studies that model and predict care processes and disease progression. However, few studies describe the necessary experimental design of the annotation ... -
Pasientmedverknad ved akutt sjukdom – ein metasyntese av pasient- og helsepersonellerfaringar
(Chapter, 2020)Ein metasyntese syner at pasientmedverknad under akutt sjukdom kan variere frå at pasienten tek autonome val til at pasientane blir møtt med paternalistiske haldningar. Når livreddande behandling må gjennomførast, er det ... -
Prediction of Clinical Endpoints in Breast Cancer Using NMR Metabolic Profiles
(Chapter, 2018)Metabolic profiles reflect biological conditions as a result of biochemical changes within a living system. It is therefore possible to associate metabolic signatures with clinical endpoints of diseases, such as breast ... -
Preliminary Processing and Analysis of an Adverse Event Dataset for Detecting Sepsis-Related Events
(Chapter, 2021)Adverse event (AE) reports contain notes detailing procedural and guideline deviations, and unwanted incidents that can bring harm to patients. Available datasets mainly focus on vigilance or post-market surveillance of ... -
Registration of MR to Percutaneous Ultrasound of the Spine for Image-Guided Surgery
(Chapter, 2014)One of the main limitations of today’s navigation systems for spine surgery is that they often are not available until after the bone surface has been exposed. Also, they lack the capability of soft tissue imaging, both ... -
Samhandling mellom sykepleiere i spesialist- og kommunehelsetjenesten før, under og etter samhandlingsreformen
(Chapter, 2019)I dette kapitlet viser vi hvordan sykepleiere i sykehus oppfatter at samhandlingen og informasjonsutvekslingen med kommunehelsetjenesten har endret seg over tid. Teoretisk bygger kapitlet på samhandlingsteorier. Intervjuer ... -
Ultrasonic well integrity logging using phased array technology
(Chapter, 2023)Ultrasonic well integrity logging is an important and common procedure for well completion and plug-and-abandonment operations. Typical logging tools employ single-element ultrasound transducers. In medical ultrasound ...