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目的评价Fukunari评级法和应变率(SR)法在鉴别甲状腺良恶性肿瘤的价值。方法选择术前接受传统超声和弹性成像检查的甲状腺结节患者76例,其中男性28例,女性48例;年龄23~75岁,平均年龄37岁。由2名具有丰富超声弹性成像知识的影像医生对超声图像进行分析,依据5级的评分系统来评价结节的硬度,硬度低为1或2级,硬度高为3或4级;同时评价结节的SR比值。结果超声检查共发现84个结节,其中良性结节62个,恶性结节22个。当评级法取3级作为鉴别良恶性结节基准值,其灵敏度和特异度分别为87.1%、77.3%,而SR取2.92作为基准值鉴别良恶性结节,其灵敏度和特异度为90.3%和91.0%。甲状腺良恶性结节的SR值分别为2.23±0.37、3.53±0.52,两者差异具有显著统计学差异(P<0.01)。结论超声弹性成像Fukunari评级法与SR法鉴别诊断甲状腺良恶性结节效果相当,但SR法更客观。
Objective To evaluate the value of Fukunari rating and strain rate (SR) in differentiating benign and malignant thyroid tumors. Methods Totally 76 patients with thyroid nodules undergoing conventional ultrasound and elastography were selected, including 28 males and 48 females. The average age was 37 years (range, 23-75 years). Ultrasound images were analyzed by two imaging doctors with extensive knowledge of elastography. The hardness of the nodules was evaluated according to a five-grade scoring system. The hardness of the nodules was 1 or 2, and the hardness was 3 or 4. At the same time, Section of the SR ratio. Results Ultrasound examination found a total of 84 nodules, including 62 benign nodules and 22 malignant nodules. Sensitivity and specificity were 87.1% and 77.3% respectively when the rating method was taken as the reference value for differentiating benign and malignant nodules, and the sensitivity and specificity of 90.3% for discriminating benign and malignant nodules with SR as 2.92 91.0%. The SR values of benign and malignant thyroid nodules were 2.23 ± 0.37 and 3.53 ± 0.52, respectively, with significant difference (P <0.01). Conclusion Ultrasound elastography Fukunari rating method and SR method in the differential diagnosis of benign and malignant thyroid nodules have the same effect, but the SR method is more objective.