Browsing Institutt for sirkulasjon og bildediagnostikk by Title

Now showing items 427-446 of 1860

    • Deep Learning in the Echocardiography Workflow: Challenges and Opportunities 

      Pasdeloup, David (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 

      Nøstdal, Torkjell; Bernklev, Tomm; Fredheim, Olav Magnus; Paddison, Johanna S.; Ræder, Johan (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 

      Reis, Felipe CG; Haro, Anderson S; Bacurau, Aline V.; Hirabara, Sandro M; Wasinski, Frederick; Ormanji, Milene S; Moreira, Jose Bianco Nascimento; Kiyomoto, Beatriz H; Bertoncini, Clelia RA; Brum, Patricia Chakur; Curi, Rui; Bader, Michael; Bacurau, Reury FP; Pesquero, Joao B; Araujo, Ronaldo C (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 

      Dybvik, Henrikke; Steinert, Ralf Martin (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 

      Hope, Tuva Roaldsdatter; White, Nathan S.; Kuperman, Joshua; Chao, Ying; Yamin, Ghiam; Bartch, Hauke; Schenker-Ahmed, Natalie M.; Rakow-Penner, Rebecca; Bussell, Robert; Nomura, Natsuko; Kesari, Santosh; Bjørnerud, Atle; Dale, Anders (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 

      Dybvik, Henrikke; Steinert, Ralf Martin (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 

      Mostad, Dagmar; Klepstad, Pål; Follestad, Turid; Pleym, Hilde (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 

      Rise, Marit By; Skagseth, Martin; Klevanger, Nina Elisabeth; Aasdahl, Lene; Borchgrevink, Petter Chr.; Jensen, Chris; Tenggren, Hanne; Halsteinli, Vidar; Jacobsen, Trym Nordstrand; Løland, Svein Bjarte; Johnsen, Roar; Fimland, Marius Steiro (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 

      Bolstad, Per Kristian; Hoff, Lars; Torp, Hans; Johansen, Tonni Franke (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. 

      Møller, Ina (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 ...

    • Det rurale perspektivet på overvekt og fedmeproblematikken 

      Hammerstad, Elisabeth (Master thesis, 2021)
      Bakgrunn: Overvekt og fedme er et av nåtidens store helseutfordringer. Overvekt og fedme høyner risikoen for helseplager og sykdom. I tillegg øker risikoen for stigmatisering og ekskludering. Dette kan bidra til å utvikle ...

    • 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, ...

    • Detailed stratified GWAS analysis for severe COVID-19 in four European populations 

      Degenhardt, Frauke; Ellinghaus, David; Juzenas, Simonas; Lerga-Jaso, Jon; Wendorff, Mareike; Maya-Miles, Douglas; Uellendahl-Werth, Florian; ElAbd, Hesham; Lenning, Ole Bernt; Myhre, Ronny; Vadla, May Sissel; Holten, Aleksander Rygh; Kildal, Anders Benjamin; Lind, Andreas; Dyrhol-Riise, Anne Ma; Hoff, Dag Arne Lihaug; Müller, Fredrik; Solligård, Erik; Holter, Jan Cato; Afset, Jan Egil; Damås, Jan Kristian; Bergan, Jonas; Risnes, Kari; Muller, Karl Erik; Tonby, Kristian; Heggelund, Lars; Gustad, Lise Tuset; Grimsrud, Marit Mæhle; Dudman, Susanne Gjeruldsen; Folseraas, Trine; Skogen, Vegard; Hov, Johannes Espolin Roksund; Karlsen, Tom Hemming; Rühlemann, Malte C.; Arora, Jatin; Özer, Onur; Wacker, Eike Matthias; Wienbrandt, Lars; Ortiz, Aron Blandino; de Salazar, Adolfo; Chercoles, Adolfo Garrido; Palom, Adriana; Ruiz, Agustin; Garzia-Fernandez, Alba-Estela; Blanco-Grau, Albert; Mantovani, Alberto; Zanella, Alberto; Mayer, Alena; Bandera, Alessandra; Franke, Andre (Peer reviewed; Journal article, 2022)
      Given the highly variable clinical phenotype of Coronavirus disease 2019 (COVID-19), a deeper analysis of the host genetic contribution to severe COVID-19 is important to improve our understanding of underlying disease ...

    • Detection and differentiation of breast cancer sub-types using a cPLA2a activatable fluorophore 

      Chiorazzo, MG; Tunset, Hanna Maja; Popov, AV; Johansen, Berit; Moestue, Siver Andreas; Delikatny, EJ (Journal article; Peer reviewed, 2019)
      Cytosolic phospholipase A2α (cPLA2α) has been shown to be elevated in breast cancer and is a potential biomarker in the differentiation of molecular sub-types. Using a cPLA2α activatable fluorophore, DDAO arachidonate, we ...

    • Detection of Cerebral High-Intensity Transient Signals by NeoDoppler during Cardiac Catheterization and Cardiac Surgery in Infants 

      Leth-Olsen, Martin; Døhlen, Gaute; Torp, Hans; Nyrnes, Siri Ann (Peer reviewed; Journal article, 2022)
      There is a risk of gaseous and solid micro-embolus formation during transcatheter cardiac interventions and surgery in children with congenital heart disease (CHD). Our aim was to study the burden of high-intensity transient ...

    • Detection of Nonadherence to Antihypertensive Treatment by Measurements of Serum Drug Concentrations 

      Bergland, Ola Undrum; Halvorsen, Lene Vernås; Søraas, Camilla Lund; Hjørnholm, Ulla; Kjær, Vibeke Norheim; Rognstad, Stine; Brobak, Karl Marius; Aune, Arleen; Olsen, Eirik; Fauchald, Ylva; Heimark, Sondre; Thorstensen, Christian W; Liestøl, Knut; Solbu, Marit Dahl; Gerdts, Eva; Mo, Rune; Rostrup, Morten; Kjeldsen, Sverre; Høieggen, Aud; Opdal, Mimi Stokke; Fadl Elmula, Fadl Elmula M. (Peer reviewed; Journal article, 2021)
      Nonadherence to drugs is a challenge in hypertension treatment. We aimed to assess the prevalence of nonadherence by serum drug concentrations compared with 2 indirect methods and relate to the prescribed drug regimens in ...

    • Detection of recurrent prostate cancer with 18F-Fluciclovine PET/MRI 

      Selnæs, Kirsten Margrete; Krüger-Stokke, Brage; Elschot, Mattijs; Johansen, Håkon; Steen, Per Arvid; Langørgen, Sverre; Aksnessæther, Bjørg Yksnøy; Indrebø, Gunnar; Sjøbakk, Torill Eidhammer; Tessem, May-Britt; Moestue, Siver Andreas; Knobel, Heidi; Tandstad, Torgrim; Bertilsson, Helena; Solberg, Arne; Bathen, Tone Frost (Peer reviewed; Journal article, 2020)
      Objective: Simultaneous PET/MRI combines soft-tissue contrast of MRI with high molecular sensitivity of PET in one session. The aim of this prospective study was to evaluate detection rates of recurrent prostate cancer by ...

    • Deteksjon og karakterisering av lymfeknuter ved lungekreft: En pilotstudie 

      Haugdal, Dina (Bachelor thesis, 2019)
      Lungekreft er i dag den enkeltstående kreftformen som tar livet av flest mennesker i Norge. Årsaken til at så få overlever er at lungekreft oppdages sent og det er lite kunnskap om maligne lymfeknuter i lungehilii og ...

    • Detektion af Rygmarvslæsioner ved Multipel Sklerose. Sammenligning af Magnetisk Resonans Vægtninger 

      Low, Peter (Master thesis, 2019)
      Adskillige typer for magnetisk resonans billedvægtninger er anbefalet til den bedst mulige fremstilling af multipel sklerose læsioner i rygmarven. Den diagnostiske virkningsfuldhed varierer mellem dem, grundet forskelle i ...

    • Determinants and reference values for blood volume and total hemoglobin mass in women and men 

      Oberholzer, Laura; Montero, David; Robach, Paul; Siebenmann, Christoph; Ryrsøe, Camilla Koch; Bonne, Thomas C.; Breenfeldt Andersen, Andreas; Bejder, Jacob; Karlsen, Trine; Edvardsen, Elisabeth; Rønnestad, Bent; Hamarsland, Håvard; Cepeda-Lopez, Ana C.; Rittweger, Jörn; Treff, Gunnar; Ahlgrim, Christoph; Almquist, Nicki Winfield; Hallén, Jostein; Lundby, Carsten (Peer reviewed; Journal article, 2023)
      Blood volume (BV) is an important clinical parameter and is usually reported per kg of body mass (BM). When fat mass is elevated, this underestimates BV/BM. One aim was to study if differences in BV/BM related to sex, age, ...