Hashimoto's thyroiditis; ultrasound; color Doppler sonography; grouping.

桥本甲状腺炎；超声；彩色多普勒；分型。

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Objective To investigate the diagnostic value of color doppler sonography applied in neck tumors.

目的探讨彩色多普勒超声在颈部肿块诊断及鉴别诊断中的应用价值。

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Purpose To research the application of Color Doppler Sonography in the diagnosis of senior degenerative valvulopathy.

目的：探讨彩色多普勒超声诊断老年性退行性心瓣膜病的临床应用价值。

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In 1967 he delivered a "transcutaneous Doppler, " a forerunner of sonography.

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