Upon analysis we found that 56% were only on at least 50% of the recommended background dose.

经分析我们发现，仅56%的患者在接受所推荐背景剂量的至少50%。

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For most people more than half of their natural background radiation dose comes from radon, a radioactive gas that can accumulate in homes, schools and workplaces.

对大多数人来说，他们自然环境辐射剂量的一半以上来自氡—一种可聚集在家庭、学校和工作场所的放射性气体。

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Summary of Background Data. High dose methylprednisolone sodium succinate (MPSS) for the patients with acute spinal cord injury has been considered standard treatment in the several countries.

急性脊髓损伤时应用大剂量甲基强的松龙治疗在一些国家一直被认为是标准治疗。

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According to LNT, any and all radiation doses, even background and below, are harmful and linear with dose.

FORBES: Space Invaders -- Asteroids, Mars And Radiation

The straight-line portion of these types of curves above Earth background has been the basis for the Linear No-Threshold Dose hypothesis, or LNT.

FORBES: Fear Of Radiation -- It's All In The Noise

Dr. GERBER: It's approximately four times the natural radiation dose that we all receive annually in the Unites States, as a result from background radiation due to radon and other materials.

NPR: Study: Heart CT Scans May Pose Risk