Objective To study the clinical characteristics of lower lung field tuberculosis and heighten the awareness of LLFTB.
目的了解下肺野结核的临床特点，提高对LLFTB的认识。
Objective To summarize and investigate the clinical and imaging characteristics of lower lung field tuberculosis and improve diagnostic accuracy of these diseases.
目的总结分析下肺野结核的临床及影像学特点，提高对该疾病的诊断水平。
RV correlates extremely significantly with the middle lung field on inspiratory HRCT(P<0.01) , significantly with the upper, lower lung field and overall lung(P<0.05).
残气容积（RV）与吸气相中肺野平均肺密度极显著相关（P<0.01），与上、下肺野及全肺则为显著相关（P<0.05）。
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