Affiliation: | aThe General Engineering Research Institute (GERI), Liverpool John Moores University, James Parsons Building Room 114, Byrom Street, Liverpool L3 3AF, United Kingdom;bUmm Al-Qura University, College of Computer and Information Systems, Computer Engineering Department, P.O. Box 715 Makkah 21955, Saudi Arabia;cNorth Western Medical Physics Department, Christie Hospital, Wilmslow Road, Withington, Manchester M20 4BX, United Kingdom |