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鉴于采用常規吞鋇检查方法,对于食管部分病变往往不能得到正确診断結果。Freidenfelt氐(1956年)采用二氧化碳气体与鋇浆作食管双重造影,观察食管扩张情况。Berridge及Gregg两氏(1958年)应用电影照相术检查食管恶性狹窄。連氏(1960年)
Due to the conventional method of swallowing examination, it is often impossible to obtain correct diagnosis results for some esophageal lesions. Freidenfelt氐 (1956) used double-contrast imaging of carbon dioxide gas and eel for esophageal dilatation. Berridge and Gregg (1958) used cinematography to examine malignant stenosis of the esophagus. Lien (1960)