• A left ventricular phantom for 3D echocardiographic twist measurements 

      Hjertaas, Johannes Just; Matre, Knut (Peer reviewed; Journal article, 2020)
      Traditional two-dimensional (2D) ultrasound speckle tracking echocardiography (STE) studies have shown a wide range of twist values, also for normal hearts, which is due to the limitations of short-axis 2D ultrasound. The ...
    • Myocardial function in aortic stenosis - insights from radial multilayer Doppler strain 

      Cramariuc, Dana; Gerdts, Eva; Hjertaas, Johannes Just; Cramariuc, Alexandru; Davidsen, Einar Skulstad; Matre, Knut (Peer reviewed; Journal article, 2015-02-19)
      Background Left ventricular (LV) radial tissue Doppler imaging (TDI) strain increases gradually from the subepicardial to the subendocardial layer in healthy individuals. A speckle tracking echocardiography study suggested ...
    • One-year impact of bariatric surgery on left ventricular mechanics: results from the prospective FatWest study 

      Grymyr, Lisa Marie Dale; Nadirpour, Saied; Gerdts, Eva; Nedrebø, Bjørn Gunnar; Hjertaas, Johannes Just; Matre, Knut; Cramariuc, Dana (Journal article; Peer reviewed, 2021)
      Aims Patients with severe obesity are predisposed to left ventricular (LV) hypertrophy, increased myocardial oxygen demand, and impaired myocardial mechanics. Bariatric surgery leads to rapid weight loss and improves ...