Base pathogenesis of respiratory tract viral infection is phlegm-heat obstruction in the lung, so cooling and dispersing therapy can drive away stagnated exogenous pathogen.
中医认为呼吸道病毒感染的主要病因为外感风热时邪，基本病机为痰热壅肺，清法和宣法可以给邪以出路，驱邪外出；
Objective To improve the imaging diagnosis and differential diagnosis of atypical hydrops at base lung.
目的提高对不典型肺底积液的影像诊断与鉴别诊断。
The study of staging lung cancer is the base of the clinical study.
肺癌的临床分期研究是肺癌临床研究的基础。
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