"The NLST cannot answer all of the important questions about screening that will be important for implementation," Aberle said.

NLST并不能回答所有有关影像学的重要问题，这有待进一步的研究。

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However, the NLST data can be used to develop mathematical models to determine how long screening should be performed and how often.

Aberle说，“然而，NLST取得的数据可以用于建立数学模型，来确定影像学检查所需的最佳时长和频率。

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The NLST was designed to answer specific questions about the screening in older heavy smokers and was conducted at sites with sophisticated medical resources and experts.

NLST是为了回答有关老龄重度吸烟者的影像学检查的特殊问题而设计，并且在拥有丰富的医疗资源和专家的站点中进行。

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