[1] Univ Hosp Nimes, Dept Med Imaging, EA 2415, 4 Rue Prof Robert Debre, F-30029 Nimes, France
[2] Univ Hosp Lapeyronie, Dept Osteoarticular Radiol, 371 Ave Doyen Gaston Giraud, F-34295 Montpellier 5, France
[3] Univ Hosp Toulouse, Hop Pierre Paul Riquet, Radiol & Med Imaging, Pl Docteur Baylac,TSA 40031, F-31059 Toulouse 9, France