1 Department of Radiology, McGill University, 1650 Cedar Avenue, Montreal, Quebec H3G 1A4, Canada.
2 Department of Radiology and Research, Institute of the McGill University Health Centre, 1001 Decarie Blvd, Montreal H4A 3J1, Quebec, Canada.
3 Segal Cancer Centre, Lady Davis Institute for Medical Research, Jewish General Hospital, 3755 Cote Ste-Catherine Road, Montreal, Quebec H3T 1E2, Canada.
4 Gerald Bronfman Department of Oncology, McGill University, Suite 720, 5100 Maisonneuve Blvd West, Montreal, Quebec H4A3T2, Canada.
5 Department of Otolaryngology, Head and Neck Surgery, Royal Victoria Hospital, McGill University Health Centre, 1001 boul. Decarie Blvd, Montreal, Quebec H3A 3J1, Canada.
6 Department of Computer Science, McGill University, 3480 University St, Montreal, Quebec H3A 0E9, Canada.
7 Medical Physics Unit, Cedars Cancer Centre, McGill University Health Centre, 1001 Decarie Blvd, Montreal, Quebec H4A 3J1, Canada.