Browsing Institutt for sirkulasjon og bildediagnostikk by Title
Now showing items 431-450 of 1942
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Data acquisition for high resolution blood oxygen level dependent fMRI
(Doctoral theses at NTNU;2018:75, Doctoral thesis, 2018)Blood oxygen level dependent functional magnetic resonance imaging (BOLD fMRI) is an important non-invasive technique for investigation of brain function. Using BOLD fMRI, brain activity can be localized with high spatial ... -
Data Adaptive 2-D Tracking Doppler for High-Resolution Spectral Estimation
(Peer reviewed; Journal article, 2019)Spectral broadening in pulsed-wave Doppler caused by the transit-time effect deteriorates the frequency resolution and may cause overestimation of maximum velocities in high-velocity blood flow regions and for large ... -
Data from national health registers as endpoints for the Tromsø Study: Correctness and completeness of stroke diagnoses
(Peer reviewed; Journal article, 2021)Aim: To assess whether stroke diagnoses in national health registers are sufficiently correct and complete to replace manual collection of endpoint data for the Tromsø Study, a population-based epidemiological ... -
Deadly diving? Physiological and behavioural management of decompression stress in diving mammals
(Journal article; Peer reviewed, 2012)Decompression sickness (DCS; ‘the bends’) is a disease associated with gas uptake at pressure. The basic pathology and cause are relatively well known to human divers. Breath-hold diving marine mammals were thought to be ... -
Decidual and placental NOD1 is associated with inflammation in normal and preeclamptic pregnancies
(Peer reviewed; Journal article, 2021)Introduction: Inflammation is a normal physiological process that increases to harmful levels in preeclampsia. It affects the interaction between maternal immune cells and fetal trophoblasts at both sites of the maternal-fetal ... -
Decision support system and outcome prediction in a cohort of patients with necrotizing soft-tissue infections
(Peer reviewed; Journal article, 2022)Introduction: Necrotizing Soft Tissue Infections (NSTI) are severe infections with high mortality affecting a heterogeneous patient population. There is a need for a clinical decision support system which predicts ... -
Decision Tree Analyses for Prediction of QoL over a One-Year Period in Breast Cancer Patients: An Added Value of Patient-Reported Outcomes
(Peer reviewed; Journal article, 2023)Despite the current shift in medicine towards patient-centered care, clinicians rarely utilize patient-reported outcomes (PROs) in everyday practice. We examined the predictors of quality- of-life (QoL) trajectories in ... -
Deep Learning Applications for the Assessment of Valvular Heart Disease using Transthoracic Echocardiography
(Doctoral theses at NTNU;2024:198, Doctoral thesis, 2024)Valvular heart disease (VHD) is a class of diseases that affect the heart valves, and are associated with a reduced cardiac output and a poor prognosis for the afflicted patients. Transthoracic echocardiography (TTE) is ... -
Deep Learning Diffusion Parameters from Magnetic Resonance Imaging An Odyssey of Deep Learning IVIM Parameter Estimation
(Doctoral theses at NTNU;2024:148, Doctoral thesis, 2024)Cancer is a prominent cause of premature mortality worldwide and often preventable through early detection. Magnetic resonance imaging (MRI) is a vital modality in the investigation of many types of cancers, due to its ... -
Deep Learning for Improved Precision and Reproducibility of Left Ventricular Strain in Echocardiography: A Test-Retest Study
(Peer reviewed; Journal article, 2023)Aims Assessment of left ventricular (LV) function by echocardiography is hampered by modest test-retest reproducibility. A novel artificial intelligence (AI) method based on deep learning provides fully automated ... -
Deep Learning in the Echocardiography Workflow: Challenges and Opportunities
(Doctoral theses at NTNU;2023:390, Doctoral thesis, 2023)Echocardiography is the most widely used imaging technique for cardiac imaging due to its availability, low-cost and real-time capabilities. With numerous indicators of heart function, it now enables precise diagnosis of ... -
Defining the cut-off point of clinically significant postoperative fatigue in three common fatigue scales
(Journal article; Peer reviewed, 2018)Purpose Postoperative fatigue (POF) is an often underestimated problem after surgery. Studies on POF often report fatigue scores without relating this to the clinical relevance for the patients. The aim of this study was ... -
Deletion of Kinin B2 receptor alters muscle metabolism and exercise performance
(Journal article, 2015)Metabolic syndrome is a cluster of metabolic risk factors such as obesity, diabetes and cardiovascular diseases. Mitochondria is the main site of ATP production and its dysfunction leads to decreased oxidative phosphorylation, ... -
Demonstrating the Feasibility of Multimodal Neuroimaging Data Capture with a Wearable Electoencephalography + Functional Near-Infrared Spectroscopy (EEG+FNIRS) in Situ
(Peer reviewed; Journal article, 2021)We developed a wearable experimental sensor setup featuring multimodal EEG+fNIRS neuroimaging applicable for in situ experiments of human behavior in interaction with technology. A low-cost electroencephalography (EEG) was ... -
Demonstration of non-gaussian restricted diffusion in tumor cells using diffusion time-dependent diffusion-weighted magnetic resonance imaging contrast
(Peer reviewed; Journal article, 2016)The diffusion-weighted magnetic resonance imaging (DWI) technique enables quantification of water mobility for probing microstructural properties of biological tissue and has become an effective tool for collecting information ... -
Description of a Wearable Electroencephalography + Functional Near-Infrared Spectroscopy (EEG+FNIRS) for In-Situ Experiments on Design Cognition
(Peer reviewed; Journal article, 2021)We developed a wearable experimental sensor setup featuring multimodal EEG+fNIRS neuroimaging data capture applicable for in situ experiments at a lower financial threshold. Consistent application of a good protocol and ... -
Desflurane consumption with automated vapour control systems in two different anaesthesia machines. A randomized controlled study
(Peer reviewed; Journal article, 2021)Background: In general anaesthesia practice a fresh gas flow (FGF) of ≥0.5 L/min is usually applied. Automated gas delivery devices are developed to reduce volatile anaesthetic consumption by limiting gas flow. This study ... -
Design of a study evaluating the effects, health economics, and stakeholder perspectives of a multi-component occupational rehabilitation program with an added workplace intervention - A study protocol
(Journal article; Peer reviewed, 2018)Background Recent research has suggested that interventions at the workplace might be the most potent ingredient in return to work interventions, but few studies have investigated the different effects of workplace ... -
Design, Fabrication and Testing Highly Sensitive Single Element Doppler Transducers
(Journal article; Peer reviewed, 2018)Three common piezoelectric materials have been studied for use in pulsed wave Doppler ultrasound, where high sensitivity is required, while bandwidth is less important. A large transducer aperture, 80 mm 2 , results in a ... -
"Det er ikke bare å tømme bøtta rett ut." En kvalitativ studie av bioingeniørers erfaringer med praksisveiledning av studenter i medisinske laboratorier.
(Master thesis, 2020)Bakgrunn: Bioingeniører er autoriserte helsepersonell, og de fleste arbeider i medisinske laboratorier ved sykehus. I løpet av studiet har alle bioingeniørstudentene praksis i medisinske laboratorier hvor de veiledes av ...