多层螺旋CT扫描图像技术在眼眶爆裂性骨折患者眼眶解剖学观察中的应用意义

Application significance of multi-slice spiral CT technology on the observation of orbital anatomy of the patients with orbital blowout fracture

[目的]探讨多层螺旋CT扫描图像技术在成人眼眶爆裂性骨折眼眶解剖学特点观察中的应用价值.[方法]收集18具颅骨样本(男性10例,女性8例),采用手工灌注细砂方法、眼眶CT及多层螺旋CT测量眼眶容积.采用Hertel氏突出计、眼眶CT及多层螺旋CT分别测量48例眼眶爆裂性骨折患者正常眼和患眼的眼球突出度、眼球内陷度、眼眶容积及增大量.[结果]采用Hertel氏眼球突出计、眼眶CT及多层螺旋CT测量的眼眶爆裂性骨折患眼的眼球内陷度间差异具有统计学意义(t=5.941,P<0.001);采用眼眶CT及多层螺旋CT测量的眼眶容积及增大量间差异具有统计学意义(t=6.234,P<0.001;t=5.865,P<0.001).眼球内陷度与眼眶容积增大量呈正相关(r=0.931,P<0.001),回归方程为Y=0.877X+0.434.[结论]采用多层螺旋CT扫描图像技术测量眼眶爆裂性骨折患者的眼眶容积变化、眼球突出度及内陷度更为精确.

OBJECTIVE To explore the application significance of multi-slice spiral CT technology on the observation of orbital anatomy of the adults with orbital blowout fracture.METHODS 18 skull samples（10 males and 8 females）were collected,The orbital volumes were measured by hand perfusion of sand,orbital CT and multi-slice spiral CT.Hertel＇s exophthalmometer,orbital CT and multi-slice spiral CT were respectively used to measure the degree of exophthalmus,the degree of enophthalmos,orbital volume and the increased amount of the normal and sick eyes of 48 patients with orbital blowout fracture.RESULTS The difference of enophthalmos measured by Hertel＇s exophthalmometer,orbital CT and multi-slice spiral CT had statistical significance（t=5.941,P〈0.001）.The difference of the orbital volume and the increased amount measured by orbital CT and multi-slice spiral CT had statistical significance（t=6.234,P〈0.001;t=5.865,P〈0.001）.There was a positive correlation between the degree of enophthalmos and the increased amount of orbital volume（r=0.931,P〈0.001）.The regression equation was Y=0.877 X ＋ 0.434.CONCLUSION The multi-slice spiral CT technology was a more precise method for the measurement of the orbital volume,the degree of exophthalmus and enophthalmos of the patients with orbital blowout fracture.