Blar i NTNU Open på forfatter "Espeland, Torvald"

Viser treff 1-13 av 13

    • 3D Myocardial Mechanical Wave Measurements: Toward In Vivo 3D Myocardial Elasticity Mapping 

      Salles, Sebastien; Espeland, Torvald; Rodriguez-Molares, Alfonso; Aase, Svein Arne; Hammer, Tommy; Støylen, Asbjørn; Aakhus, Svend; Løvstakken, Lasse; Torp, Hans (Peer reviewed; Journal article, 2020)
      Objectives This study aimed to investigate the potential of a novel 3-dimensional (3D) mechanical wave velocity mapping technique, based on the natural mechanical waves produced by the heart itself, to approach a noninvasive ...

    • Automatic measurements of left ventricular volumes and ejection fraction by artificial intelligence: clinical validation in real time and large databases 

      Olaisen, Sindre Hellum; Smistad, Erik; Espeland, Torvald; Hu, Jieyu; Pasdeloup, David Francis Pierre; Østvik, Andreas; Aakhus, Svend; Rösner, Assami; Malm, Siri; Stylidis, Michael; Holte, Espen; Grenne, Bjørnar Leangen; Løvstakken, Lasse; Dalen, Håvard (Peer reviewed; Journal article, 2023)
      Aims Echocardiography is a cornerstone in cardiac imaging, and left ventricular (LV) ejection fraction (EF) is a key parameter for patient management. Recent advances in artificial intelligence (AI) have enabled fully ...

    • Automatic Myocardial Strain Imaging in Echocardiography Using Deep Learning 

      Østvik, Andreas; Smistad, Erik; Espeland, Torvald; Berg, Erik Andreas Rye; Løvstakken, Lasse (Journal article; Peer reviewed, 2018)
      Recent studies in the field of deep learning suggest that motion estimation can be treated as a learnable problem. In this paper we propose a pipeline for functional imaging in echocardiography consisting of four central ...

    • Combining Automatic Angle Correction and 3-D Tracking Doppler for the Assessment of Aortic Stenosis Severity 

      Fiorentini, Stefano; Espeland, Torvald; Berg, Erik Andreas Rye; Aakhus, Svend; Torp, Hans; Avdal, Jørgen (Journal article; Peer reviewed, 2019)
      Aortic valve stenosis (AS) is a narrowing of the aortic valve opening, which causes increased load on the left ventricle. Untreated, this condition can eventually lead to heart failure and death. According to current ...

    • Examining the educational impact of the mini-CEX: a randomised controlled study 

      Smeby, Susanne Skjervold; Espeland, Torvald; Berg, Erik Andreas Rye; Samstad, Eivind; Lillebo, Børge; Slørdahl, Tobias Schmidt (Journal article; Peer reviewed, 2021)
      Background: The purpose of this study is to evaluate the mini-Clinical Evaluation Exercise (mini-CEX) as a formative assessment tool among undergraduate medical students, in terms of student perceptions, effects on direct ...

    • Fully automatic estimation of global left ventricular systolic function using deep learning in transesophageal echocardiography 

      Berg, Erik Andreas Rye; Tasken, Anders Austlid; Nordal, Trym; Grenne, Bjørnar Leangen; Espeland, Torvald; Garstad, Idar Kirkeby; Dalen, Håvard; Holte, Espen; Stølen, Stian Bergseng; Aakhus, Svend; Kiss, Gabriel Hanssen (Journal article, 2023)
      Aims To improve monitoring of cardiac function during major surgery and intensive care, we have developed a method for fully automatic estimation of mitral annular plane systolic excursion (auto-MAPSE) using deep learning ...

    • Implantasjon av hjertestartere ved St. Olavs hospital 2006–15 

      Nyman, Fred Mathias; Molaug, Ina Charlotte; Næss, Anne Marte; Espeland, Torvald; Loennechen, Jan Pål; Mjølstad, Ole Christian (Peer reviewed; Journal article, 2020)
      BAKGRUNN Implantasjon av hjertestarter (implantable cardioverter defibrillator, ICD) er etablert behandling hos pasienter med høy risiko for plutselig hjertedød. Studiens formål var å kartlegge pasientkarakteristika, ...

    • Increased complement factor B and Bb levels are associated with mortality in patients with severe aortic stenosis 

      Shahini, Negar; Ueland, Thor; Auensen, Andreas; Michelsen, Annika; Ludviksen, Judith K; Hussain, Amjad Iqbal; Pettersen, Kjell; Aakhus, Svend; Espeland, Torvald; Lunde, Ida Gjervold; Kirschfink, Michael; Nilsson, Per; Mollnes, Tom Eirik; Gullestad, Lars; Aukrust, Pål; Yndestad, Arne; Louwe, Maria Cornelia (Journal article; Peer reviewed, 2019)
      Inflammation is involved in initiation and progression of aortic stenosis (AS). However, the role of the complement system, a crucial component of innate immunity in AS, is unclear. We hypothesized that circulating levels ...

    • Mechanical wave velocities in left ventricular walls – in healthy subjects and patients with aortic stenosis 

      Espeland, Torvald; Wigen, Morten Smedsrud; Dalen, Håvard; Berg, Erik Andreas Rye; Hammer, Tommy Arild; Salles, Sebastien Andre Roger; Løvstakken, Lasse; Amundsen, Brage H.; Aakhus, Svend (Peer reviewed; Journal article, 2023)
      Background Mechanical wave velocity (MWV) measurement is a promising method for evaluating myocardial stiffness, because these velocities are higher in patients with myocardial disease. Objectives Using high frame ...

    • Moving ferromagnetic objects distorting cardiac magnetic resonance imaging 

      Espeland, Torvald; Berg, Erik Andreas Rye; Eriksen, Marius; STENSÆTH, KNUT HAAKON (Peer reviewed; Journal article, 2020)

    • Myokardfibrose 

      Espeland, Torvald; Lunde, Ida Gjervold; Amundsen, Brage H.; Gullestad, Lars; Aakhus, Svend (Journal article; Peer reviewed, 2018)
      BAKGRUNN Myokardfibrose oppstår sekundært til kardial belastning eller skade. I denne oversiktsartikkelen presenteres sentrale aspekter ved myokardfibrose. KUNNSKAPSGRUNNLAG Vi foretok 2 søk i PubMed som til sammen ...

    • A Very Large Cardiac Channel Data Database (VLCD) Used to Evaluate Global Image Coherence (GIC) as an In Vivo Image Quality Metric 

      Rindal, Ole Marius Hoel; Bjåstad, Tore Grüner; Espeland, Torvald; Berg, Erik Andreas Rye; Måsøy, Svein-Erik (Peer reviewed; Journal article, 2023)
      Ultrasound image quality is of utmost importance for a clinician to reach a correct diagnosis. Conventionally, image quality is evaluated using metrics to determine the contrast and resolution. These metrics require ...

    • YKL-40 (Chitinase-3-Like Protein 1) Serum Levels in Aortic Stenosis 

      Arain, Fizza Kanwal; Abraityte, Judita Aurelija; Bogdanova, Mariia; Solberg, Ole Geir; Michelsen, Annika; Lekva, Tove; Aakhus, Svend; Holm, Sverre; Halvorsen, Bente; Finsen, Alexandra; Vinge, Leif Erik; Nymo, Ståle Haugset; Espeland, Torvald; Ranheim, Trine; Aukrust, Pål; Vaage, Ingvar Jarle; Auensen, Andreas; Gullestad, Lars; Ueland, Thor (Peer reviewed; Journal article, 2020)
      BACKGROUND: Identification of novel biomarkers could provide prognostic information and improve risk stratification in patients with aortic stenosis (AS). YKL-40 (chitinase-3-like protein 1), a protein involved in ...