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目的:探讨甲状腺乳头状癌(papillary thyroid carcinoma,PTC)的多普勒超声特征及其与颈部淋巴结转移情况间的关系。方法:采用彩色多普勒超声评估162例患者的169个PTC结节;另采用脉冲多普勒超声评估同一批80例患者的80个PTC结节。彩色多普勒超声主要评估癌结节的血管模式和血供程度。脉冲多普勒主要分析血流流速曲线的参数,包括收缩期峰值血流速度(peak systolic velocity,PSV)、搏动指数(pulsatility index,PI)、阻力指数(resistance index,RI)、PSV差值、PI差值和RI差值。将上述超声特征与颈部淋巴结转移作单因素分析,研究各超声特征与颈部淋巴结转移情况间的关系。结果:多普勒超声上,与颈部淋巴结转移有关的超声特征主要有癌结节的血供程度及RI差值。结论:特定的多普勒超声特征可在一定程度上提示PTC发生颈部淋巴结转移的可能性。
Objective: To investigate the relationship between Doppler ultrasonographic features of papillary thyroid carcinoma (PTC) and cervical lymph node metastasis. Methods: 169 PTC nodules of 162 patients were evaluated by color Doppler ultrasound. Another 80 PTC nodules of the same group of 80 patients were evaluated by pulsed Doppler ultrasound. Color Doppler ultrasound mainly evaluates the vascular patterns and blood supply of cancer nodules. Pulse Doppler parameters of the blood flow velocity curve were analyzed, including peak systolic velocity (PSV), pulsatility index (PI), resistance index (RI), PSV difference, PI difference and RI difference. The ultrasound features and cervical lymph node metastasis as a single factor analysis of the relationship between the characteristics of ultrasound and cervical lymph node metastasis. Results: Doppler ultrasound, cervical lymph node metastasis associated with the main features of the ultrasound nodules of the degree of blood supply and RI difference. Conclusion: The specific features of Doppler ultrasound may prompt the possibility of cervical lymph node metastasis to some extent.