论文部分内容阅读
目的 研究鼻咽癌颈转移淋巴结放疗前后多普勒血流信号特征。方法 首程放疗的５２例鼻咽癌患者的１３４枚颈转移淋巴结，分别于放疗前，放疗２周、４周、６周和放疗后１月行彩色多普勒能量图检查，分析其血流信号特征。结果 放疗前颈转移淋巴结以周边型（７６．９２％）血流，Ⅰ、Ⅱ级（４２．３１％、３６．５４％）血流强度为主；放疗后阻力指数（Ｒ）、收缩期峰值流速（Ｖｍａｘ）值较放疗前显著下降（Ｐ＜０．０５）。结论 鼻咽癌颈转移淋巴结放疗前以周边型血流、Ⅰ～Ⅱ级血流强度为主，放疗后淋巴结血供明显降低甚至消失，这对放疗后随访、判断颈淋巴结复发有意义。
Objective To study the characteristics of Doppler flow signals before and after radiotherapy for cervical lymph node metastasis of nasopharyngeal carcinoma. Methods A total of 134 cervical lymph node metastases from 52 patients with nasopharyngeal carcinoma undergoing first-course radiotherapy were examined by color Doppler before radiotherapy, 2 weeks, 4 weeks, 6 weeks and 1 month after radiotherapy. Blood flow Signal characteristics. Results Before radiotherapy, the cervical lymph node metastasis was mainly peripheral blood type (76.92%), grade Ⅰ and Ⅱ (42.31%, 36.54%). The resistance index (R), systolic peak The velocity of flow (Vmax) decreased significantly compared with that before radiotherapy (P <0.05). Conclusions Peripheral blood flow, grade Ⅰ ~ Ⅱ blood flow intensity before radiotherapy of cervical lymph node metastasis of nasopharyngeal carcinoma is the main type. The blood supply of lymph node obviously decreases or even disappears after radiotherapy, which is of significance for follow-up after radiotherapy and judgment of cervical lymph node recurrence.