不同影像学方法诊断骨梗死的结果分析

目的探讨骨梗死的影像学诊断要点.方法病人均行X线平片,CT,MRI检查.累及股骨下段、胫骨上段、胫骨下段、股骨颈,胫骨粗隆.结果早期骨梗死X线平片无明显异常,中期CT表现为髓腔不均匀钙化,晚期MRI表现为典型的地图样表现.结论MRI检查是诊断早期骨梗死最为有效的方法,X线平片对中晚期病变有帮助,CT较平片敏感.

Results Analysis of Different Imaging Methods on Bone Infarction

Objective To explore the imaging diagnostic points of bone infarction. Methods All cases with bone infarction were examined by X-ray, MRI, CT. All sites of the bone infarction were found including the distal femur, proximal tibia , distal tibia, femoral neck and the tuberosity. Results The cases without abnormality in plain film determined as early bone infarction. CT manifestation was inhomogeneous ossification in the medullary cavity. MRI manifestation was map-shaped lesions. Conclusion MRI is the most effective way to examine and find the bone infarction in the early stage. Plain radiography was helpful to diagnose the bone infarction in the middle and later stage, CT examination is more sensitive than plain radiography.