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目的对比分析甲状腺微小癌和甲状腺微小良性结节性病变的常规高频超声及超声弹性成像的声像图特征。探讨超声弹性成像对甲状腺微小病变的诊断价值。方法回顾分析经病理证实的129例患者,共150个长径在3~10 mm的甲状腺微小结节的高频超声和超声弹性成像声像图特征。结果超声弹性成像对于甲状腺微小癌的诊断具有较高的灵敏度、特异度分别为88.1%、89.4%,与常规高频超声比较两者差异有统计学意义(P<0.05)。对于最大长径≤5 mm的甲状腺微小病变,超声弹性成像的诊断准确度(85.4%)高于常规高频超声(68.3%),但两者差异无统计学意义(P>0.05)。结论超声弹性成像在甲状腺微小病变的良恶性鉴别诊断中具有重要价值。
OBJECTIVE: To compare the sonographic features of conventional high-frequency ultrasound and ultrasound elastography in the diagnosis of thyroid microcarcinoma and thyroid benign nodular lesions. To investigate the diagnostic value of ultrasound elastography in the diagnosis of thyroid micro-lesion. Methods A retrospective analysis of pathologically confirmed 129 patients, a total of 150 long diameter of 3 ~ 10 mm in the thyroid nodules by high-frequency ultrasound and ultrasound elastography ultrasonographic features. Results Ultrasound elastography had higher sensitivity and specificity for the diagnosis of thyroid microcarcinoma, with a specificity of 88.1% and 89.4%, respectively, which was significantly different from that of conventional high-frequency ultrasound (P <0.05). The diagnostic accuracy of ultrasound elastography (85.4%) was higher than that of conventional high-frequency ultrasound (68.3%), but there was no significant difference between the two (P> 0.05). Conclusion Ultrasound elastography is of great value in the differential diagnosis of benign and malignant thyroid lesions.