Objective : To evaluate the value in detecting pulmonary tubercle ( PT ) on dual - energy subtraction digital radiography ( DDR ).

目的: 评价双能量减影在肺结核 结节 诊断中的应用价值.

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Purpose : To evaluate application value of dual - energy subtraction with chest radiography in medical examination.

目的: 评价双能量减影胸部摄片在医学体检中的应用价值.

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