关于这个甲癌和X射线，原来11年nytimes有过一篇

Thyroid Fears Aside, That X-Ray’s Worth It

http://www.nytimes.com/2011/04/26/health/26brody.html?_r=0

主要是针对dental x-ray的来说的。
告诉大家没有事。

文中给了一个经典文献，

引用：

But the best study of diagnostic X-ray exams, conducted in Sweden, where precise medical records are kept, found no connection to thyroid cancer.

Medical Diagnostic X Rays and Thyroid Cancer
http://jnci.oxfordjournals.org/content/87/21/1613.abstract

文中还说到

引用：

Other factors linked to an increased risk of thyroid cancer include consumption of nitrates in public water supplies (from fertilizer runoff) and certain vegetables, and goiter caused by insufficient iodine in the diet.

还有一个相关的文献是
Comparison of Documented and Recalled Histories of Exposure to Diagnostic X-rays in Case-Control Studies of Thyroid Cancer
http://aje.oxfordjournals.org/content/157/7/652.abstract

有意思的是女性患者比男患者多。

对于医学检查涉及到的X ray 不会有显著不良后果，这个应该有共识。

协和几个人闹的是说长期暴露，所以我说如果有人能把相关检测的剂量，以及可能的辐射量与增加的可能性科普一下，比什么都更容易明白。

那几个人虽然也是医生，但是对于放射剂量与可能的致癌可能性也是一团浆糊