New England Journal of Medicine confirms cancer from radiation from CT (CAT) scan

A 2007 report in the New England Journal of Medicine suggested that the radiation from current CT-scan use may cause as many as 1 in 50 future cases of cancer.^[19]

According to the USAToday, and members of the American Heart Association, an average CT scan can expose a patient to between 1,000 to 10,000 millirems of radiation, depending on the exact machine and the examination being performed. However, Japanese people who were 1 mile from ground zero received only 3,000 millirems of radiation, on average. ^[20]

Typical scan doses

Examination	Typical effective dose (mSv)	(milli rem)
Chest X-ray	0.1	10
Head CT	1.5[21]	150
Abdomen CT	5.3[21]	530
Chest CT	5.8[21]	580
Chest, Abdomen and Pelvis CT	9.9[21]	990
Cardiac CT angiogram	6.7-13[22]	670 - 1300
CT colonography (virtual colonoscopy)	3.6 - 8.8	360 - 880

19. "Time.com - Avoiding Unnecessary CT Scans".