1 Department of Radiology, Nuclear Medicine and Molecular Imaging, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands.
2 Department of Radiology, Nuclear Medicine and Molecular Imaging, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands. Electronic address: thomaskwee@gmail.com.
3 Department of Radiology, Zuyderland Medical Center, Heerlen, The Netherlands.