Feydy A, Drapé J, Beret E, Sarazin L, Pessis E, Minoui A, Chevrot A
Service de Radiologie B, Hôpital Cochin, 27, rue du Faubourg Saint-Jacques, F-75 679 Paris Cedex 14, France.
Eur Radiol. 1998;8(4):598-602. doi: 10.1007/s003300050442.
The aim of this study was to compare the performance of CT and MRI in the diagnosis of longitudinal stress fracture of the tibia (LSFT). A retrospective study of imaging findings was performed in 15 patients with LSFT. The CT and MR images were compared for detection of fracture line, callus, bone marrow edema, and soft tissues changes. The CT and MRI techniques allowed the detection of the fracture line in 82 and 73 % of cases, respectively. The callus was always visualized with CT or MRI. The MRI technique had a markedly higher sensitivity than CT in the detection of bone marrow edema (73 vs 18 %) and soft tissue lesions (87 vs 9 %). This may cause a misleading aggressive appearance on MRI. Computed tomography remains the best imaging modality for diagnosis of LSFT. However, MRI findings should be known to obviate the performance of CT or bone biopsy.
本研究的目的是比较CT和MRI在诊断胫骨纵向应力性骨折（LSFT）中的表现。对15例LSFT患者的影像学检查结果进行了回顾性研究。比较了CT和MR图像在骨折线、骨痂、骨髓水肿及软组织改变的检测情况。CT和MRI技术分别在82%和73%的病例中检测到骨折线。骨痂总能通过CT或MRI显示出来。MRI技术在检测骨髓水肿（73%对18%）和软组织病变（87%对9%）方面的敏感性明显高于CT。这可能导致MRI上出现具有误导性的侵袭性表现。计算机断层扫描仍然是诊断LSFT的最佳影像学检查方法。然而，应了解MRI的表现，以免进行CT检查或骨活检。
