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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 investigate the value of quantitative coronary CT in the diagnosis of Graves ophthalmopathy. Methods The maximum cross-sectional area, short diameter and long diameter of extraocular muscles of 50 normal subjects and 50 patients with Graves’ eye were measured and the R value of each extraocular muscle was calculated. Results A total of 228 extraocular muscles were thicked in 50 patients with Graves ophthalmopathy. The following rectus muscles (30.3%) and medial rectus muscle (23.2%) were the most common, followed by upper rectus muscle (19.7%), lateral rectus muscle (13.6% ) And upper oblique muscle (13.4%). The average maximum cross-sectional area (70.21 mm2,56.93 mm2,64.06 mm2,58.51 mm2,20.65 mm2) and R value (0.61,0.55,0.61,0.50,0.52) were significantly higher than those in the normal group (27.72mm2,27.07mm2,26.93mm2,36.74mm2,9.42mm2) and R value (0.41,0.35,0.60,0.34,0.44), there was a significant difference between Graves group and normal group (P < 0.01). Conclusion Quantitative coronal CT examination, especially the measurement of R value, can accurately determine the extraocular muscle thickening and contribute to the diagnosis of Graves ophthalmopathy.