1. Department of Radiology, Hospital del Mar, Universitat Pompeu Fabra, Barcelona, Spain
2. BioMIT, Department of Applied Mathematics, Universitat Politècnica de València, Valencia, Spain
3. Department of Surgery, Hospital del Mar, Barcelona, Spain
4. BioMIT, Department of Electronic Engineering, Universitat Politècnica de València, Valencia, Spain
5. Department of Electrical and Computer Engineering, Kansas State University, Manhattan, KS, USA