定量眼眶冠状位CT测量在甲状腺相关眼病中的应用  

Measurement of the Quantitative Orbital Coronal CT in Thyroid Associated Ophthalmopathy

作　　者：赵毅凯[1] 杨振海[1] 尹智[1] 薛鸿祥[1] 

机构地区：[1]天津市眼科医院影像科,天津300020

出　　处：《实用放射学杂志》2008年第12期1604-1606,共3页Journal of Practical Radiology

摘　　要：目的探讨定量冠状位CT检查在Graves眼病诊断中的应用价值。方法分别测量50例正常者和50例Graves眼病者的眼外肌的最大截面积、短径和长径,并计算每条眼外肌的R值。结果50例Graves眼病患者,共228条眼外肌增粗,以下直肌(30.3%)和内直肌(23.2%)最常见,其次为上直肌(19.7%),外直肌(13.6%)和上斜肌(13.4%),其平均最大截面积(70.21 mm2、56.93mm2、64.06 mm2、58.51 mm2、20.65 mm2)和R值(0.61、0.55、0.61、0.50、0.52)明显大于正常组的平均最大截面积(27.72mm2、27.07 mm2、26.93 mm2、36.74 mm2、9.42 mm2)和R值(0.41、0.35、0.60、0.34、0.44),Graves组和正常组之间差异有统计学意义(P<0.01)。结论定量冠状位CT检查特别是R值的测量可以准确判断眼外肌的增厚,有助于Graves眼病的诊断。Objective To study the values of quantitative assessment of extraocular muscles in diagnosing the thyroid associated ophthal- mopathy （ TAO ）. Methods The maximum section area, short and long diameters of extraoeular muscles on orbital coronal CT were measured and the value of R was calculated in 50 healthy persons and 50 patients with TAO. Results The maximum section areas of 228 extraoeular muscles in 50 patients with TAO increased, of them,inferior rectus（30.3% ） and mediate rectus muscle （ 23.2% ） were common, followed by superior rectus,lateral reetus and superior oblique muscle. Their maximum section areas （70.21 mm^2 ,56.93 mm^2 ,64.06 mm^2 ,58.51 mm^2, 20.65 mm^2, respectively ） and the values of R （ 0.61 , 0.55 , 0.61 , 0.50,0.52,respectively） were larger than that in healthy group （ 27.72 mm^2 ,27.07 mm^2 ,26.93 mm^2 ,36.74 mm^2 ,9.42 mm^2 respectively in maximum section areas ） and （ 0.41,0.35,0.60,0.34,0.44 in the values of R,respectively）. There were statistical significant differents between them. Conclusion The quantitative coronal CT measurement, especially the values of R can assess enlargement of extraoeular muscles accurately,which may be helpful in diagnosis of TAO.

关 键 词：甲状腺相关眼病 眼外肌 体层摄影术 X线计算机 

分 类 号：R771[医药卫生—眼科] R814.42[医药卫生—临床医学]