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目的：探讨彩色多普勒能量图（ＣＤＰＩ）与脉冲多普勒（ＰＷ）对鉴别淋巴结性质的意义。方法：ＣＤＰＩ、ＰＷ观测１５９个颈肿大淋巴结的血流特点与阻力指数（ＲＩ）。结果：ＣＤＰＩ能１００％显示淋巴结血流，共分为四型，各类性质淋巴结有其血流特点，ＲＩ对鉴别淋巴结性质有重要意义。结论：ＣＤＰＩ、ＰＷ与二维超声结合，同时结合临床特点对鉴别淋巴结性质有重要作用。
Objective: To explore the significance of color Doppler energy imaging (CDPI) and pulsed doppler (PW) in differentiating the nature of lymph nodes. Methods: Blood flow characteristics and resistance index (RI) of 159 cervical lymph nodes were observed with CDPI and PW. RESULTS: CDPI showed 100% lymph node blood flow and was divided into four types. Lymph nodes of various types had their blood flow characteristics. RI plays an important role in identifying the nature of lymph nodes. Conclusion: The combination of CDPI, PW and two-dimensional ultrasound, combined with clinical features have an important role in the identification of lymph node properties.