Mainly based on the
Americans every year from natural radioactive radiation by the average 3mSv, smoking a pack of cigarettes a day people will spend an extra 53mSv absorption, it is also one of the reasons of high cancer risk in smokers. Radioactive radiation a chest X-ray is 0.02-0.1mSv, equivalent to the amount of natural radiation 2.4-10 days, the possibility of cancer can be neglected, and the radiation of CT than X light high 500 to 1100 times, so the lung cancer screening is the use of low dose CT, the amount of radiation is about 1.5mSv, the equivalent of 6 months of natural radiation the amount of its carcinogenic potential is very low,<a href="http://www.adhunikgroup.com/media/images/monclerjackets-1401.html">モンクレール アウトレット</a> http://www.adhunikgroup.com/media/images/monclerjackets-1401.html, for long-term smoking smokers, compared with radiation and they breathe in, also can not be ignored >
of this proposal is the national lung screening test from the beginning of 2001 (NLST), the large randomized trials with chest X - ray as the control. Both the X light or CT, all radioactive radiation induced tumors, contact will be excessive, screening technology used are low radioactive, but also slightly increased the risk of cancer,<a href="http://www.humboldthr.com/_vti_index/hotbrandbags-3830.html">ゴヤール バッグ</a> http://www.humboldthr.com/_vti_index/hotbrandbags-3830.html, for this kind of inspection, it must be dangerous and gained benefit comparison, benefit must be greater than the harm, to promote.
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