原发性动脉瘤样骨囊肿的CT和MRI表现研究

Study on CT and MRI Findings of Primary Aneurysmal Bone Cyst

目的对原发性动脉瘤样骨囊肿在CT和MRI中的表现进行比较分析。方法方便选取2016年4月—2017年4月该院收治的110例原发动脉瘤样骨囊肿患者作为该次研究对象,在所有患者经手术病理证实的同时给予CT和MRI(核磁共振成像)检查,对CT和MRI检查的影像学表现进行分析比较。结果 (1)CT检查在类圆形、分叶形及骨膜反应的诊断率分别为50.9%、49.1%及5.5%,MRI检查在类圆形、分叶形及骨膜反应的诊断率分别为36.4%、63.6%及4.5%,组间比较差异无统计学意义(P>0.05);CT检查方法在囊腔低于5个、5~10个、11个以上和液-液平面低于5个、5~10个、11个以上及病理骨折诊断率分别为19.1%、24.5%、56.4%、20.9%、51.8%、27.3%及2.7%,MRI检查方法在囊腔低于5个、5~10个、11个以上和液-液平面低于5个、5~10个、11个以上及病理骨折诊断率分别为27.3%、0.0%、72.7%、20.0%、27.3%、52.7%及9.1%,组间比较数据差异有统计学意义(P<0.05)。(2)CT诊断原发病动脉瘤样骨囊肿的诊断准确率为84.6%,MRI诊断原发病动脉瘤样骨囊肿的诊断准确率为80.7%,数据差异无统计学意义(P>0.05)。结论CT和MRI检查方法在诊断原发动脉肿瘤样骨囊肿中有着比较高的应用价值,然而MRI检查在诊断为小病变具有较高的敏感性。

Objective This paper tries to compare the performance of primary aneurysmal bone cysts in CT and MRI.Methods From April 2016 to April 2017,110 patients with primary aneurysmal bone cyst were conveniently studied.All patients were confirmed by surgery and pathology at the same time to carry on the CT and MRI（magnetic resonance imaging） examination.Imaging findings of CT and MRI were analyzed and compared.Results The diagnosis rate by CT check in the round,leaf and periosteal reaction were 50.9%,49.1% and 5.5%,and that by MRI were 36.4%,63.6% and 4.5%,there were no differences between groups,with no statistical significance（P〉0.05）; CT examination in capsule cavity less than 5,5 -10,above 11 and the liquid level was less than 5,5 -10,more than 11,and pathological fracture diagnosis rate were19.1%,24.5%,56.4%,20.9%,51.8%,27.3% and 2.7%,MRI examination method in the cavity was less than 5,5 -10,above 11 and the liquid level was less than 5,5 -10,more than 11 and pathological fracture diagnosis rate were 27.3%,0.0%,72.7%,20.0%,27.3%,52.7% and 9.1%.There were significant differences between the groups（P〈0.05）.The diagnostic accuracy of CT diagnosis of primary aneurysmal bone disease the cyst was 84.6%,the accuracy rate of MRI diagnosis of primary disease of aneurysmal bone cyst was 80.7%,there was no significant difference（P 〉0.05）.Conclusion CT and MRI examination methods have relatively high value in the diagnosis of primary tumor artery bone cyst,but MRI has high sensitivity in the diagnosis of small lesions.