Affiliation: | (1) Department of Radiology, University Hospitals Leuven, Herestraat 49, 3000 Leuven, Belgium;(2) Department of Radiation Oncology, Leuven Cancer Institute, University Hospitals Leuven, Leuven, Belgium;(3) Department of Otorhinolaryngology, Head and Neck Surgery, University Hospitals Leuven, Leuven, Belgium |