目的：探讨声带注射得保松治疗慢性肥厚性喉炎的疗效。
Objective:To study the therapeutic effect of vocal cord injection with diprospan in treatment of chronic hypertrophic laryngitis.
方法应用频谱仪和电子计算机对30例声带无明显病变的室带肥厚者和30例室带声带无明显病变的志愿者，测定基频、低音、音域和频率微扰百分值。
Methods By using narrow band spectrum analyses and computer we studied the parameters in 30 patients and 30 normal controls. Results The fundamental frequency and bass were lower in diseased group.
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