Methods Isocentric localization in routine way and marking the laser cross in body surface and revolving the bed made radiation field avoiding the shoulder joint.

方法常规等中心定位并体表标出激光灯“十”字，旋转治疗床至照射野避开肩关节治疗颈段肿瘤。

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The DNA in all organisms is under constant attack from highly reactive chemicals and radiation, and errors are often made when it is copied.

所有生物组织中的DNA都处于被高度活跃的化学物质和辐射的不停攻击之下，而且DNA复制过程中经常出错。

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The Rochester researchers found that resveratrol made tumour cells more sensitive to cancer-destroying radiation while rendering healthy cells less susceptible.

罗彻斯特大学的研究人员发现，白藜芦醇可以让肿瘤细胞对杀癌射线更加敏感，同时让健康细胞不那么容易受到影响。

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In a recent paper, Dr Jacobson argues that observations made of synchrotron radiation produced by the Crab nebula (the remnants of a supernova observed in 1054) limit the granularity of space.

ECONOMIST: Planck-scale physics

Some people believe that the proportionality assumption about radiation should be made because it gives a "conservative" estimate of possible risks.

WSJ: The Panic Over Fukushima

With more emotion than sense, electronic components, machine parts and even towels made far from Fukushima have required radiation checks or been turned back by Italy and China, among others.

ECONOMIST: A spreading cloud of economic and human costs