J
Jonas Crosby
Researcher at Norwegian University of Science and Technology
Publications - 9
Citations - 2214
Jonas Crosby is an academic researcher from Norwegian University of Science and Technology. The author has contributed to research in topics: Speckle tracking echocardiography & Speckle pattern. The author has an hindex of 6, co-authored 9 publications receiving 2135 citations. Previous affiliations of Jonas Crosby include University of Oslo.
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Journal ArticleDOI
Noninvasive myocardial strain measurement by speckle tracking echocardiography: validation against sonomicrometry and tagged magnetic resonance imaging.
Brage H. Amundsen,Thomas Helle-Valle,Thor Edvardsen,Hans Torp,Jonas Crosby,Erik Lyseggen,Asbjørn Støylen,Halfdan Ihlen,Joao A.C. Lima,Otto A. Smiseth,Stig A. Slørdahl +10 more
TL;DR: Speckle tracking echocardiography provides accurate and angle-independent measurements of LV dimensions and strains and has potential to become a clinical bedside tool for quantifying myocardial strain.
Journal ArticleDOI
New Noninvasive Method for Assessment of Left Ventricular Rotation Speckle Tracking Echocardiography
Thomas Helle-Valle,Jonas Crosby,Thor Edvardsen,Erik Lyseggen,Brage Amundsen,Hans-Jørgen Smith,Boaz D. Rosen,João A. C. Lima,Hans Torp,Halfdan Ihlen,Otto A. Smiseth +10 more
TL;DR: It is demonstrated that regional LV rotation and torsion can be measured accurately by STE, suggesting a new echocardiographic approach for quantification of LV systolic function.
Journal ArticleDOI
Regional myocardial long-axis strain and strain rate measured by different tissue Doppler and speckle tracking echocardiography methods: a comparison with tagged magnetic resonance imaging
TL;DR: ST alone or combined with TDI seems to be suitable for automated measurements of regional myocardial deformation, which is important for further development to increase accuracy and applicability.
Journal ArticleDOI
3-D speckle tracking for assessment of regional left ventricular function.
TL;DR: A method for assessing local strain and rotation from 3-D speckle tracking in apical full-volume datasets and when applied on patients, the method demonstrated reduced strain in the infarcted areas.
Journal ArticleDOI
The effect of including myocardial anisotropy in simulated ultrasound images of the heart
TL;DR: It is hypothesized that some of this effect is caused by the varying orientation of anisotropic myocardial structures relative to the ultrasonic beam and that this can be taken into account in simulations by imposing an angle dependent correlation of the scatterer points.