6Vandeberg BC, Malghem JJ, Labaiss MA, et al. MR imaging of avascular necrosis and transient marrow edema of the femora] head [J]. Radiographics, 1993,13:501 - 520.
7Fujioka M, Kubo T, Nakamura F, et al. Initial changes of nontraumatic osteonecrosis of femoral head in fat suppression images: bone marrow edema was not found before the appearance of hand patterns [J]. Magn Reson Imaging, 2001, 19: 985-991.
8Koo KH, Aim O, Kim R, et al. Bone marrow edema and associated pain in early stage osteonecrosis of the femoral head : prospective study with serial MR ire.ages [J]. Radiology, 1999, 213: 715-722.
9Sakai T, Sugano N, Nishii T, et al. MR findings of necrosis lesion and the extralesional area of osteonecrosis of the fenloral head [J]. Skeletal Radiol, 2000, 29: 133- 141.
10Kubo T, Yamamoto T, Inoue S, et al. Histological findings of bone marrow edema pattem on MRI in o6teonecrosis of the femoral head [J]. J Orthop Sci, 2000, 5 : 520 - 523.
