1. Department of Radiology; Ryhov County Hospital; Jönköping Sweden
2. Department of Clinical Physiology; Linköping University; Linköping Sweden
3. Center of Medical Image Science and Visualization; Linköping University; Linköping Sweden
4. Department of Clinical Physiology; Karolinska Institutet; Karolinska University Hospital; Stockholm Sweden
5. Faculty of Medicine and Health; School of Health Science; Örebro University; Örebro Sweden