Browsing Institutt for sirkulasjon og bildediagnostikk by Author "Aakhus, Svend"
Now showing items 1-20 of 28
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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 ... -
Arterial properties in adults with long-lasting active juvenile idiopathic arthritis compared to healthy controls
Aulie, Hanne Aaserud; Estensen, Mette-Elise; Selvaag, AM; Lilleby, Vibeke; Flatø, Berit; Aakhus, Svend (Journal article; Peer reviewed, 2018)Background The data on cardiovascular risk and systemic arterial properties in patients with long-lasting juvenile idiopathic arthritis (JIA) is limited. The objective of this study was to describe systemic arterial ... -
Automated estimation of mitral annular plane systolic excursion by artificial intelligence from 3D ultrasound recordings
Tasken, Anders Austlid; Berg, Erik Andreas Rye; Grenne, Bjørnar Leangen; Holte, Espen; Dalen, Håvard; Stølen, Stian Bergseng; Lindseth, Frank; Aakhus, Svend; Kiss, Gabriel Hanssen (Peer reviewed; Journal article, 2023)Perioperative monitoring of cardiac function is beneficial for early detection of cardiovascular complications. The standard of care for cardiac monitoring performed by trained cardiologists and anesthesiologists involves ... -
Automatic assessment of left ventricular function for hemodynamic monitoring using artificial intelligence and transesophageal echocardiography
Yu, Jinyang; Tasken, Anders Austlid; Flade, Hans Martin; Skogvoll, Eirik; Berg, Erik Andreas Rye; Grenne, Bjørnar Leangen; Rimehaug, Audun Eskeland; Kirkeby-Garstad, Idar; Aakhus, Svend (Peer reviewed; Journal article, 2024)We have developed a method to automatically assess LV function by measuring mitral annular plane systolic excursion (MAPSE) using artificial intelligence and transesophageal echocardiography (autoMAPSE). Our aim was to ... -
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 ... -
Clinical and echocardiographic parameters predicting 1- and 2-year mortality after transcatheter aortic valve implantation
Kjønås, Didrik; Schirmer, Henrik; Aakhus, Svend; Eidet, Jo; Malm, Siri; Aaberge, Lars; Busund, Rolf; Røsner, Assami (Journal article; Peer reviewed, 2021)Background: Transcatheter aortic valve implantation (TAVI) has become a standard treatment option for patients with symptomatic aortic stenosis. Elderly high-risk patients treated with TAVI have a high residual mortality ... -
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 ... -
Eliciting Patient Risk Willingness in Clinical Consultations as a Means of Improving Decision-Making of Aortic Valve Replacement
Hussain, Amjad; Garratt, Andrew; Brunborg, Cathrine; Aakhus, Svend; Gullestad, Lars; Pettersen, Kjell I (Journal article; Peer reviewed, 2016)Background: Treatment decisions for aortic valve replacement (AVR) should be sensitive to patient preferences. However, we lack knowledge of patient preferences and how to obtain them. Methods and Results: We assessed ... -
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 ... -
Impaired right ventricular function in long-term survivors of allogeneic haematopoietic stem-cell transplantation
Massey, Richard; Diep, Phoi Phoi; Burman, Marta Maria; Kvaslerud, Anette Borger; Brinch, Lorentz; Aakhus, Svend; Gullestad, Lars; Ruud, Ellen; Beitnes, Jan Otto (Journal article; Peer reviewed, 2021)Aims Survivors of allogeneic haematopoietic stem-cell transplantation (allo-HSCT) are at higher risk of cardiovascular disease. We aimed to describe right ventricular (RV) systolic function and risk factors for RV dysfunction ... -
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 ... -
Interleukin-6 receptor inhibition with tocilizumab induces a selective and substantial increase in plasma IP-10 and MIP-1β in non-ST-elevation myocardial infarction
Kleveland, Ola; Ueland, Thor; Kunszt, Gabor; Bratlie, Marte; Yndestad, Arne; Broch, Kaspar; Holte, Espen; Ryan, Liv; Amundsen, Brage H.; Bendz, Bjørn; Aakhus, Svend; Espevik, Terje; Halvorsen, Bente; Mollnes, Tom Eirik; Wiseth, Rune; Gullestad, Lars; Aukrust, Pål; Damås, Jan Kristian (Journal article; Peer reviewed, 2018)Aim To evaluate the effect of interleukin-6 inhibition with tocilizumab on the cytokine network in patients with acute non-ST-elevation myocardial infarction (NSTEMI). Methods 117 patients with acute NSTEMI were randomised ... -
Left ventricular diastolic dysfunction predicts mortality in patients with systemic sclerosis
Tennøe, Anders; Murbræch, Klaus; Andreassen, Johanna; Fretheim, Håvard Halland; Garen, Torhild Oddveig; Gude, Einar; Andreassen, Arne K.; Aakhus, Svend; Molberg, Øyvind; Hoffmann-Vold, Anna-Maria (Journal article; Peer reviewed, 2018)Background Primary cardiac affection is common and is a major cause of death in systemic sclerosis (SSc), but there are knowledge gaps regarding the effect of cardiac dysfunction on mortality. Objectives The purpose ... -
Left Ventricular Systolic Function in Long-Term Survivors of Allogeneic Hematopoietic Stem Cell Transplantation
Massey, Richard J; Diep, Phoi Phoi; Ruud, Ellen; Burman, Marta Maria; Kvaslerud, Anette Borger; Brinch, Lorentz; Aakhus, Svend; Gullestad, Lars; Beitnes, Jan Otto (Peer reviewed; Journal article, 2020)Background Allogeneic hematopoietic stem cell transplantation (allo-HSCT), a potentially curative therapy for malignant and nonmalignant diseases, is being increasingly used in younger patients. Although allo-HSCT survivors ... -
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 ... -
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 ... -
On the origin of clutter in echocardiography and possible solutions
Fatemi, Ali (Doctoral theses at NTNU;2022:41, Doctoral thesis, 2022) -
Predictors of early mortality after transcatheter aortic valve implantation
Kjønås, Didrik; Dahle, Gry; Schirmer, Henrik; Malm, Siri; Eidet, Jo; Aaberge, Lars; Steigen, Terje; Aakhus, Svend; Busund, Rolf; Rösner, Assami (Journal article; Peer reviewed, 2019)Objectives To investigate whether preoperative echocardiographic evaluation of ventricular function, especially right ventricular systolic and diastolic parameters including speckle-tracking analysis, could aid in the ... -
Quantification of Flow Rates and Flow Volumes in Valve Regurgitation Using 3-D High Frame-Rate Ultrasound
Fiorentini, Stefano; Berg, Erik Andreas Rye; Torp, Hans Garman; Aakhus, Svend; Avdal, Jørgen (Journal article; Peer reviewed, 2023)Valve regurgitation is a cardiac condition caused by the incomplete closure of a cardiac valve. Untreated, this condition may result in cardiac failure. Regular monitoring of this condition is essential in guiding the ... -
Randomized Trial of Interleukin-6 Receptor Inhibition in Patients With Acute ST-Segment Elevation Myocardial Infarction
Broch, Kaspar; Anstensrud, Anne Kristine; Woxholt, Sindre; Sharma, Kapil Kishore; Tøllefsen, Ingvild Maria; Bendz, Bjørn; Aakhus, Svend; Ueland, Thor; Amundsen, Brage H.; Damås, Jan Kristian; Berg, Erlend; Bjørkelund, Elisabeth; Bendz, Christina; Hopp, Einar; Kleveland, Ola; Stensæth, Knut Haakon; Opdahl, Anders; Kløw, Nils-Einar; Seljeflot, Ingebjørg; Andersen, Geir Øystein; Wiseth, Rune; Aukrust, Pål; Gullestad, Lars (Journal article; Peer reviewed, 2021)Background - Prompt myocardial revascularization with percutaneous coronary intervention (PCI) reduces infarct size and improves outcomes in patients with ST-segment elevation myocardial infarction (STEMI). However, as ...