1. Department of Diagnostic Imaging, Federal University of São Paulo, Rua Napoleão de Barros, 800, São Paulo, SP 04024-002, Brazil.
2. Department of Radiology, Hospital do Coração and Teleimagem, São Paulo, Brazil.
3. Department of Radiology, Quantitative Imaging Center, Boston University School of Medicine, Boston, MA.
4. Department of Radiology, Hôpital Saint-Antoine, Paris VI University, Paris, France.
5. Department of Orthopedics, Federal University of São Paulo, São Paulo, Brazil.
6. Department of Orthopedics, Federal University of Minas Gerais, São Paulo, Brazil.