高频彩色多普勒超声在甲状腺良恶性结节诊断中的价值

目的：探讨高频彩色多普勒超声对甲状腺良恶性结节的诊断价值.方法：对219例甲状腺结节患者行高频彩色多普勒超声检查,重点观察分析甲状腺结节的纵径/横径（A/T）和钙化情况、血流特征,结果与病理对照.结果：恶性结节中纵横比（A/T）≥1的发生率明显高于良性结节,具有显著差异性（P＜0.001）,恶性结节微小钙化方面与良性结节具有显著差异性（P＜0.05）;高频彩色多普勒血流显像（CDFI）：良性结节中37.53％（143/381）的结节血流为Alder2级或3级;恶性结节中70.59％（108/153）血流为Alder2级或3级,二者具有显著差异性（P＜0.001）.恶性结节内血流的平均PSV和RI均高于良性结节,具有显著差异性（P＜0.05）.结论：高频彩色多普勒超声对甲状腺结节性病变有较高诊断价值,综合分析高频彩色多普勒超声图像特点可提高鉴别诊断的准确率.

Value of ultrasonography in diagnosis of benign and malignant thyroid nodules

Objective： To investigate the value of ultrasonography（US） in diagnosis of thyroid nodules. Methods： 219 patientswith thyroid nodules were examined before thyroidectomy by US. The calcify of nodules and the blood flow inside or beside the nodules were observed,the hemodynamics parameters were measured and the diagnosis of US were compared with the pathology. Results： It showed that the anteroposterior/transverse diameter ratio （A/T）≥ 1 in malignant patients was higher than that in the benign ones and there was statistical significance between them（P〈0.O01 ）. And there was also obvious differences in the calcify（P〈O.05 ）. It showed that 37.53%（ 143/381 ）of the flow in the benign nodules was Alder 2 or 3 and 70.59%（ 108/153 ）of the flow in the malignant nodules was Alder 2 or 3 and there was significant difference between them（P〈0.001 ）. The peak systolic velocity（ PSV ） and the resistance index （RI） of the malignant nodules were higher than those of benign ones,there was significant difference between them （P〈0.05）. Conclusion： There was clinical value in the diagnosis of thyroid nodules by ultra sonography, the combination of conventional US characteristic and CDFI in thyroid nodules could improve the accuracy of differential diagnosis.