Until now, estimates of cancer risk from CT scanning have been projections from data obtained from studies of the survivors of the atomic bombs in Japan. Such estimates might not be relevant to the current use of CT scans. Now the first direct study of CT scans and cancer risk has been reported (Mark S Pearce and colleagues. Lancet 2012;380:499-505; see also Comment, ibid: 455-7).
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机译：到目前为止，根据对日本原子弹幸存者的研究数据，CT扫描得出的癌症风险估计值一直是预测值。这样的估计可能与当前CT扫描的使用无关。现在，已经报道了对CT扫描和癌症风险的第一项直接研究（Mark S Pearce及其同事。Lancet2012; 380：499-505;另请参见评论，同上：455-7）。
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