Sponsored by the National cancer Institute, part of the National Institutes of Health, the NLST establishes low-dose spiral CT as the first validated screening test that reduces lung cancer mortality.

NLST由国家癌症研究所(国家健康研究所的一部分)发起，证实了低剂量螺旋CT成像是第一种可以降低肺癌死亡率的扫描检查。

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America's battered housing sector also got a dose of encouraging news, with a national index reporting a three percent jump in housing prices in the second quarter of this year.

VOA: standard.2009.08.25

The American College of Radiology is sponsoring a national Dose Index Registry to allow providers to compare their CT doses against national benchmarks, and is a lead sponsor of Image Wisely, a safety campaign.

WSJ: New Tracking of a Patient's Radiation Exposure

It will also hopefully lead to a good dose of national introspection.

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"The new statute to be presented to the Congress during this mandate intends to make this authorisation concrete, but broadening it to include synthetic drugs into what is defined as the personal dose", the minister told Colombia's National Radio.

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