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| Study of CT And MR Imaging on the Measurement of Necrosis Volume of Avascular Necrosis in Femoral Head |
| The Center Hospital of Shanxian，Shanxian 274300，China |
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Abstract Objective： To measure the necrosis volume of avascular necrosis in femoral head by CT and MR imaging and to explore the correlation between the necrosis volume of avascular necrosis in femoral head and its clinical stages. Method：80 patients with avascular necrosis of femoral head in our hospital from March 2011 to March 2014 were selected as the research objects.All the patients were given the examination of CT and MR.The necrosis volumes of avascular necrosis in femoral head measured by CT and MR were compared.The relationship between the necrosis volume of avascular necrosis in femoral head and the clinical stages was analyzed.Result：The difference between the necrosis volume measured by CT and the necrosis volume measured by MR was not statistically significant（P>0.05）.As the percentage of necrotic volume making up the volume of femoral head ascended，the clinical stage of ARCO increased. Conclusion： CT and MR imaging can help the surgeons calculate the necrosis volume of avascular necrosis in femoral head，the necrosis volume of femoral head can e used to predict the clinical stage of ARCO，it is worth of clinical spreading.
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