Diagnostic accuracy of left ventricular longitudinal function by speckle tracking echocardiography to predict significant coronary artery stenosis. A systematic review. - Ingvild Billehaug Norum; Vidar Ruddox; Thor Edvardsen; Jan Otterstad (BMC Medical Imaging, 2015)

Focused cardiac ultrasound by unselected residents - the challenges. - Vidar Ruddox; Ingvild Billehaug Norum; Thomas Muri Stokke; Thor Edvardsen; Jan Otterstad (BMC Medical Imaging, 2017)