Johannes J. Hjertaas
Haugesund, 5528, Norway
Last Updated: 09/26/2026
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Found 11 publications
Impact of aortic valve stenosis on myocardial deformation in different left ventricular levels: A three-dimensional speckle tracking echocardiography study.
Journal: Echocardiography (Mount Kisco, N.Y.)
Published: December 29, 2022
Markers of Subclinical Atherosclerosis in Severe Obesity and One Year after Bariatric Surgery.
Journal: Journal of clinical medicine
Published: March 28, 2022
One-year impact of bariatric surgery on left ventricular mechanics: results from the prospective FatWest study.
Journal: European heart journal open
Published: June 21, 2021
Left ventricular myocardial oxygen demand and subclinical dysfunction in patients with severe obesity referred for bariatric surgery.
Journal: Nutrition, metabolism, and cardiovascular diseases : NMCD
Published: May 15, 2020
Impact of arterio-ventricular interaction on first-phase ejection fraction in aortic stenosis.
Journal: European heart journal. Cardiovascular Imaging
Published: November 29, 2019
A left ventricular phantom for 3D echocardiographic twist measurements.
Journal: Biomedizinische Technik. Biomedical engineering
Published: April 25, 2019
Optimal Acquisition Settings for Speckle Tracking Echocardiography-Derived Strains in Infants: An In Vitro Study.
Journal: Ultrasound in medicine & biology
Published: September 25, 2015
Myocardial function in aortic stenosis--insights from radial multilayer Doppler strain.
Journal: Cardiovascular ultrasound
Published: December 02, 2014
Is strain by Speckle Tracking Echocardiography dependent on user controlled spatial and temporal smoothing? An experimental porcine study.
Journal: Cardiovascular ultrasound
Published: June 25, 2013
Accuracy of real-time single- and multi-beat 3-d speckle tracking echocardiography in vitro.
Journal: Ultrasound in medicine & biology
Published: July 14, 2012
Multi-layer radial systolic strain vs. one-layer strain for confirming reperfusion from a significant non-occlusive coronary stenosis.
Journal: European heart journal. Cardiovascular Imaging
Published: April 26, 2012
Showing 1-11 of 11
Last Updated: 09/26/2026