作者单位:Department of Radiology, Fondation H?pital Saint JosephParis, France[1]Departments of Radiology, CHU Montpellier, H?pital Lapeyronie, 371 Avenue du Doyen Gaston[2]Departments of Biostatistics, CHU Montpellier, H?pital Lapeyronie, 371 Avenue du Doyen Gaston[3]